best marine yacht varnish

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The Best Marine Varnishes

Written by J. Harvey / Fact checked by S. Numbers

Let’s face it, we don’t give as much credit to the almost perfect combination of boats and varnishes. After all, vessels aren’t exactly cheap. They aren’t immune to deterioration as well. If there’s one solid way for you to preserve the life of your investment and even take her beauty up a notch, wouldn’t you seize it?

For my part, I can wholeheartedly say that these varnishes are great investments, especially if we’re talking about the best marine varnish. These concoctions go beyond their practical benefits, lending anything made of wood with a nice finish that only unlocks and magnifies their natural exquisiteness.

I can say as much for the products I’ve featured here. They have given me noteworthy, if not outstanding, results that make the others I’ve tried in my more than ten years of boating and fishing pale in comparison.

• Great finish
• Easy to use
• Great value for money

• Superb satin finish
• High gloss protection
• Very versatile varnish

• Easy to apply
• Excellent UV protection

Table of Contents

1. Rust-Oleum 207008 Marine Spar Varnish

2. totalboat gleam marine spar varnish, 3. epifanes cv.500 clear varnish, 4. mccloskey 7509 man o’war spar marine varnish, 5. totalboat 482869 lust marine varnish, 6. epifanes wfm.500 wood finish matte, 7. minwax 63200444 helmsman spar urethane, 8. interlux iva316/qt cetol natural teak varnish, 9. mccloskey 7505 man o’ war spar varnish, 10. pettit marine paint flagship varnish 2015, 11. system three 1855s16 marine spar varnish, 12. duralux m738-1 spar varnish, 13. old masters 153617 spar marine varnish, factors to consider when choosing marine varnish, what is the best marine varnish, what is the difference between spar varnish and marine barnish, how do you apply marine varnish to wood, how long will marine varnish last, is marine spar varnish waterproof, best marine varnish reviews.

If I’m going for all-around reliability and protection from sun and moisture damage, I’d choose this varnish in a heartbeat.

This is my go-to varnish for anything wood found in my sailboat. Whether it’s furniture or railing or sometimes even the bow, I often get the kind of maintainability I want every time I use this. The finish is no less attractive and only gets glittery over time in a number of my past applications.

Thinned up to around 30%, it dries quickly enough to apply multiple coats in a day. Sometimes I go for as low as 20%, down to even 5%. It’s because thinning too much does tend to backfire and lead to the varnish taking a long time to dry. It’s easy to use with everything considered.

If you want the best results, I’ve found that using a fresh foam brush with every coat would result in optimal smoothness. It may seem like a waste, buying multiple brushes, but the results are unrivaled, to say the least. I’ve had applications that lasted for a good 3 years before I needed to refinish them.

• Excellent UV and water protection
• More affordable but with high-end results
• Low shelf life

This varnish smoothly combines ease of use, beautiful finishes, and above-average durability. The winning formula for successful marine finishes for wood, in short.

This varnish is versatile in that it leaves plenty of routes open for you to take. For one, I like that they give you plenty of freedom when choosing the shine you want. It’s also available in different sizes, so I always get to buy only the proportions I deem fit for a specific project.

I have to be partial to the satin finish, though, since it delivers the exquisite luster I like to see in my indoor boat furniture and fixtures like railings. However, I always make sure to apply a high-gloss varnish if I’m working on anything that has to be exposed to the sun for long hours. That being said, I like that this product gives you both satin and gloss options.

I make sure to apply the high-gloss varnish as a topcoat, and I’ve gotten excellent results, mostly 1 to 2 years of unblemished finishes, with this practice. Sometimes, it’s shorter than that, especially on wooden areas that are more exposed to the elements. Yet, it’s protection you normally expect and can get from high-gloss varnish. In addition, it’s a varnish that’s also noticeably on the thin side, so I kind of get that it wears away faster than thicker varieties.

• Uncomplicated to apply
• Has multiple sheen and size options
• Not as durable as others

Another safe option, Epifanes marine spar varnish is anything but average with its status as a crowd favorite. Expect superior finish and durability if you choose this.

This varnish easily earns a spot here, considering its unchanging and undeniably positive reputation among boaters. Simply put, it’s hard to fault because of the wonderful results it can bring. The shiny, attractive gloss that has the Epifanes trademark is rarely surpassed by other marine-grade varnishes in my opinion.

What’s equally neat is that it’s not difficult to apply. You don’t really need to sand it with every coat, unlike the majority of other brands out there, but I still suggest you do it, especially in the later coatings. I recommend using marine spirits as a thinner with a 2:1 ratio, and take the time to pour it through a strainer to guarantee a smooth finish. At best, you’ll have to set 5 to 7 days of gradual coating to get the kind of attractive finish you want; and I mean capital-A attractive.

As in other great exterior varnishes, this product is an example to follow when imparting UV protection. At least, that’s what I think is primarily responsible for the excellent finish and the overall durability. I use this as much on my sailboat’s wood portions above the waterline and furniture as well as furnishings in my home, and the finish often lasts for 2 years on average.

• Amazing shine and finish
• Takes a while to dry
• Short shelf life

McCloskey’s Man O’War spar varnish is durable, to an almost no-brainer degree. It’s what I buy if I want to get the best out of what spar varnish offers to the average boater.

Despite its relatively hard finish, spar varnish tends to wear out faster than urethane. It’s a natural thing, so I won’t bother to list it as a con. You can’t mimic the deep amber tint, caramelization, and versatility of good old spar varnish, and this brand delivers no less than that trio of perks.

If I’m going to name a worthy brand representative of spar varnishes, I’d promptly pick this one. It adheres excellently to any kind of wood, so I generously slather any wooden fixture in my boat with this once I get a hold of a bottle.

While it’s easy to use, you’d better be prepared to invest time working with this varnish. I use mineral spirits for thinning, and I make sure to apply thin coats, starting from the middle, using a mini roller and a brush, mohair and ox hair respectively. I sand in between coats, and overall it takes time since it dries slowly.

The durability stems a lot from the outstanding UV protection. My sailboat’s wooden bow that has this finish has been battered by rain a good number of times already, and it’s still holding up after a year since the initial application. Since it’s effortless to apply, I just sand and recoat every once in a while.

• Outstanding UV protection
• Adheres to most types of wood
• Classic, eye-catching spar varnish finish
• Slow-drying
• Limited availability

TotalBoat is a household name in the marine industry as far as paints and varnishes go. This is the brand’s best offering if we’re going to consider fundamental factors like durability, shine, and value for money.

I need to stress outright that this varnish is extra thick, almost honey-like. If you don’t thin it out to at least 50%, you’ll only end up grappling with it to less than desirable results. It’s not exactly beginner-friendly with that considered, but it does pay off since you get optimal protection and the kind of shine any boat owner would be proud of.

Speaking of the finish, it begins to shine through once you hit the one-year mark. At least, that’s what I get from most of the vessels and furniture I apply it to. I can say that it’s smooth sailing once you take the time to know the right consistency.

I often use a roller and apply 5 coats then do a recoat after 2 hours in a whole day. Ideally, the last two coats should only be thinned by about 10% only. It might get tricky applying it then but, trust me, you’ll get the hang of it.

I get the results I want within a day or two — or more at times during less than optimal humidities and temperatures. Even so, that’s obviously quicker than handling traditional varnish, which takes weeks to settle. I do acknowledge the thinner’s role in helping with the drying time.

• Excellent shine and finish
• Proven durability
• Becomes easy to use with practice
• Quick-drying

If we’re talking about top-of-the-line, marine-grade durability, this one deserves to be called the best marine wood finish.

This is my favorite to use on teak because of its proven waterproof capabilities and the fact that its satin finish has just the right amount of sheen, for me, at least. It brings out the beauty of the teak and almost any wood I apply it to, for that matter, and this is coming from someone who has tried numerous marine-grade varnish before. I’ve had furniture that managed to maintain its finish for an impressive 5 years with the help of this varnish.

It’s a bit of a challenge to apply. It actually flows well enough as it is, and I rarely have to thin it with every application. However, you have to make sure that you apply it evenly with every coat and oftentimes as quickly as possible. Once I get patchy and bubbly results, that’s the only time I thin it, and I sand after the first coat, totaling up to 3 coats on average. It will dry more slowly if I thin it, though.

• Excellent durability
• Nice satin finish
• Flows smoothly without thinning
• Brings out the beauty of the wood extremely well
• Fairly cost-effective
• Not beginner-friendly

Though not marine-grade, Minwax has proven to be just as durable as many products with that label. It’s very easy to use and delivers just the right amount of shine.

I often use this on my sailboat’s furniture, and if left with no other options, even the wooden exterior of the hull and bow. It goes well with canoes, but I only tend to apply it on the ribs, rudder, and planking. While not marine-grade, it’s great for outdoor furniture, and, to me, that’s always a good sign of heavy-duty UV protection.

If I want to reinforce the protection, I only need to apply more layers, 4 coats at most but not less than 2. I’ve only used it on oak-made fixtures, though, and I get the longevity and finish I want with that kind of simple setup. The varnish lasts up to 1 to 2 years before recoating becomes necessary, with minor peeling only appearing after a year based on my experience.

I like that they give you plenty of options with regards to sheen and container sizes. I prefer satin for my interior furniture. I once made the mistake of not mixing it well and got a result that’s almost similar to high gloss. To avoid this, you need to make sure you mix it for a good 5 minutes and scrape the sides and bottoms of the can as you do so. This guarantees the soft shine you’re aiming for.

• Plenty of sheen and size options
• Decent durability
• Dries quickly
• Not exactly marine-grade

This varnish earns my thumbs up with the kind of inimitable finish it can deliver and its relatively easy application.

This has since become my favorite varnish on teak fixtures when I tried it out 2 years ago. This is because of the immense difference it makes in the way it lends my pulpit or anything made of teak with a sophisticated, good-as-new finish. It’s not overly glossy, which I attribute to the “natural teak” claim, and only darkens the wood a tad so it will still maintain its natural hues.

I’m glad it didn’t cause any yellowing, and after my second application, I can still say the same. It has a runny consistency that merits forgoing thinning on the first coat. I like to use a brush when applying it to have better control over coverage, which is great enough as it is, and all I can say is that I’ll apply this to my boat’s bow and rails the moment they start showing signs of wear.

Nonetheless, it would be pushing it to say that it’s as durable as the other varnishes here. It only took a year before my bow showed signs of peels and cracks. However, after I applied a single maintenance coat on the entire thing, I found that it limited or delayed the damage since I’ve yet to see signs again after doing a recoating. That being said, I suggest applying a fresh layer at least once a year to make the most out of this marine varnish for boats.

• Outstanding finish
• No sanding and thinning required in most cases
• Good coverage
• Minimal darkening
• Well worth the money
• A bit pricey
• Not durable

Budget-friendly, reliable, and just as good as other solid brands, this McCluskey varnish is a must for anyone choosing to go for value for money all the way.

The fact that this varnish can give you outstanding satin finishes and superb durability without going overboard in cost should give you a ready hint why a lot of boaters are shifting to this product. When I say superb durability, I mean thick coatings that you’ll be confident will last for years.

In my case, the minimum is 3 years on all my wood projects, boat bows, railings, and furniture included. You may start seeing peels and scratches here and there, as evidenced by the 7-year-old canoe that I refurbished 3 years ago. But, to me, it’s still none the worse for wear and nothing a minor recoating job won’t remedy.

The finish is not unlike the ones I get from the other varnishes mentioned here. It accentuates the natural color and look of the wood, and I’m saying this for redwood, teak, and light oak, which are the types I’ve applied it to. It dries in a day like most spar varnishes and typically doesn’t need to be thinned, though sanding is ideal per coat.

Incidentally, I need to underline the fact that this varnish is one of the few that doesn’t skin over in the can after you’ve stored what’s left of it. At least, that’s what I can say for most of the cans I’ve purchased and stored, with about a third of the can full in a year.

• Works well for most types of wood
• Superior durability
• Doesn’t skin like other varnishes
• More reasonably priced than other brands

This rarely figures in marine varnish review posts, and that’s unfortunate considering it’s another top-quality marine varnish that doesn’t yellow, imparts a glossy and thick appearance, and superb UV protection.

Usually, I use this as a general-purpose varnish for the teak and cedar parts and fixtures of my one and only yacht. It gives a deep-colored, thick, glossy, grainy, and smooth finish that I can’t get enough of. It doesn’t yellow at all, probably because of the UV additive used, at least, partly. Anyway, this is one positive quality I always like from any alkyd varnish that is done right.

I prefer to spray this one, following the 20% thinning guideline. Spraying shortens the time for full coverage. I sand lightly between coats using 220-grit sandpaper, and by and large, I only need 3 to 4 coats to get the beautiful finish I described above. It takes almost a whole day to dry, but I don’t mind since I get quality results.

As for durability, I can safely say it’s UV stable. I often leave a couple of chairs and tables out on the deck if the weather’s great, oftentimes, for an entire day. Besides a few scratches in some parts, which aren’t UV-related, they haven’t peeled yet and have maintained their shininess after 2 years since application. I can say the same for the yacht’s teak pulpit.

• Doesn’t yellow
• Superb UV protection
• Proven gloss retention

To me, this is the best boat varnish if we’re only considering durability. It also earns a ready checkmark in protection and attractive finish, making it nothing short of tough to beat.

As far as durability is concerned, the longest that I’ve seen this last without undergoing any kind of major peeling or cracking is close to 3 and a half years. It was on my favorite canoe, which I use fairly regularly for freshwater fishing. 3 years is the maximum for any exterior wood varnish for me, and without a doubt, many boaters would say the same.

I attribute most of the longevity to the excellent water and UV protection. My canoe has borne the brunt of rain and water splashes over the years. I can say the same when I expose it to extensive sunlight exposure when I go fishing in Lake Erie. Top-tier durability in my book.

I sometimes use a thinner with this varnish, but I’ve found that you don’t really need to thin it if you use an HVLP spray gun. Sure, it takes a while to dry and you have to be extra careful, but I’ll take that any day if I get to enjoy these perks and results consistently.

• Outstanding durability
• Relatively attractive finish
• Easy to apply with a sprayer
• Comes in gloss and satin varieties
• Dries slowly without a thinner

A true gem of a find, Duralux exceeded my expectations with its durability and versatility.

In almost any kind of marine varnish for exterior doors, durability and protection immediately go well together. This spar varnish proves it doesn’t belong on the back burner by delivering both. One of my canoes that I applied this on is still going strong for more than a year, and that’s a quality not a lot of products can boast of.

I’ve had varnish that didn’t take more than a month to start peeling and cracking. That’s after a fresh application, mind you, and, yes, I follow brand recommendations to a tee if I haven’t discovered a better way to apply it. This varnish has kept my other canoes shiny every time so I deemed it deserves the spotlight.

Moreover, it doesn’t yellow over time, unlike some clear varnish I’ve used before. You may argue that there’s a lot of variables when it comes to varnish yellowing, like sanding and possible chemicals it can react to. I’m not sure whether this is spar polyurethane, but I’m betting it is since that’s the only type of varnish I’ve used that doesn’t give me the yellowing effect even with minimal to no sanding.

• Satisfactory finish
• Uncomplicated application
• Doesn’t yellow over time
• Doesn’t dry quickly

Old Masters’s varnish shouldn’t be overlooked for its conveniences and quality that only a few top-tier varnish brands can bravely claim they can deliver every time.

This is among the lesser-known spar varnishes that don’t yellow even after a long time has passed. The canoe that I refurbished 3 years ago would prove as much, as it’s still holding up well, surprisingly if I might add. To be honest, this was a second option when I bought it as I didn’t have TotalBoat and McCluskey varnishes available back when I did the finishing job.

I was pleasantly surprised by how things turned out. I followed the instructions and stirred it well. It’s just the right kind of thick, to the point that I don’t have to thin it when applying with a brush or roller. I do have to thoroughly sand and clean the surface first, and it evens out nicely with every coating.

It dries quickly enough for me to apply a second coat in a single day, making me think it’s an exception among oil-based spar varnishes. At best, I give an allowance of 8 to 10 hours before brushing the next coat. Obviously, that’s a time-saving perk I’ll take any day.

It doesn’t produce a yellowing effect, even when applied to parts of my canoe that are regularly exposed to heat, sunlight, and the elements. That’s noteworthy considering it’s a clear varnish. I even have to say that the slightly weathered look it has gotten lends it a charm that most boaters would appreciate.

• Easy application
• Decent durability and finish
• Doesn’t yellow with age
• Limited to small pint-sized cans

Based on my experience, there are many “safe” marine varnish options out there. This only means you’re likely to not run out of beginner-friendly brands and can guarantee high-quality results at the same time. Whether it’s high-gloss or satin, all spar varnishes are easy to apply over new wood or previously coated surfaces. Marine varnish is also not partial to any type of wood and can accommodate those commonly found aboard or form part of a vessel, like teak, redwood, oak, etc.

However, that doesn’t completely discount the need to pay attention to certain factors when making your decision. These are usually the ones I make a note of when planning to start a varnishing job.

• Durability – I’ve found that marine-grade polyurethane is hard to equal when it comes to finishes that are guaranteed to last. Most spar varnishes pale in comparison to their urethane counterparts in this regard because polyurethane tends to last for a minimum of 3 years before re-coats are needed, based on my experience. This is why they’re great options as a marine varnish for outdoor furniture.

For spar varnishes, I’ve had finishes that only lasted a year or even less. At best, these two offer equally potent UV protection, waterproof benefits, and even resistance to scratching.

• Drying Time – Are you working with a severely limited timeframe and need to complete coats within a day? You may want to consider varnishes that dry faster like water-based spar urethane since these can dry in only a few hours. Most spar varnishes require a whole day of waiting to apply coats, assuming climate conditions are optimal.
• Ease of Use – To ensure you won’t end up throwing away your money, don’t ignore how easy or hard a specific varnish is typically applied.
• Shelf Life – It won’t hurt to pay attention to how long a specific can of varnish will last while in storage.
• Gloss – This is admittedly a largely subjective factor, but if you’re opting for high-gloss varnish, it’s almost always the one with the best durability. However, do you like your wood to be extra shiny? There are semi-gloss and satin finishes that are just as attractive, if not more, especially when used on anything wood that is below deck.

We also need to discuss the possibility of a varnish yellowing or darkening the wood that it is applied to. Sometimes, the darkening could be due to the UV additive or tint used; thus, making it unavoidable unless you opt for a different varnish brand altogether.

As for yellowing, there are ways to avoid it. I shall discuss it below, but sometimes, it’s due to the actual product as well, especially if they are clear, alkyd, or oil-based. It’s not an absolute thing, though, and there are products that prove to be exceptions to this rule.

You’ll hear a lot of experienced boaters recommending brands like Epifanes, TotalBoat, McCloskey, and Rust-Oleum. I agree with them because, to me, these brands can easily meet the standards of high-quality marine varnish. Each one has qualities where they serve to shine better, and the reviews I outlined above should give you a good idea about what they are.

Nonetheless, I’m not completely discounting the other brands I included here. I daresay that they’re just as good as those top-dog brands, especially in essential factors like durability and a long-lasting aesthetically appealing finish. Moreover, I find them to be valuable substitutes if any go-to brand happens to be unavailable and won’t even hesitate to pick them as the main option based on certain requirements of a finishing job.

Incidentally, you may have noticed that I didn’t include ease of cleaning when discussing these brands. That’s because most, if not all, of them are very easy to clean for me. At least, for the almost uniform smooth finishes that I get out of them.

There’s not much, really. When boaters use the term “spar varnish”, chances are, they’re also automatically referring to marine varnish. You can also see this in how brands usually label their products in online stores, like Sherwin Williams marine spar varnish or TotalBoat gleam marine spar varnish, to cite a few examples. If you’re using spar varnish, it’s almost always marine-grade.

Both terms give the ready connotation of finishes that provide heavy-duty protection against the harsh elements usually involved when boating, fishing, and cruising. You’ll find plenty of oil-based spar varnishes (i.e. tung oil, alkyd resin, etc.) that are imbued with additives that serve to accentuate the natural beauty of the wood, as well as solvents and other chemicals that promote fast drying and add UV protection.

Since certain varnishes have different components or are more natural or synthetic, it’s best to stick to the manufacturer’s instructions when applying any kind of varnish. However, we can’t deny that most projects share a few essential guidelines, such as the following:

• Preparation usually entails sanding between coats. The most ideal to use for this purpose is 180 to 220-grit sandpaper or even a Scotchbrite pad will do sometimes. Take note that some varnish products can do without sanding, especially for the initial coat. But, this would still depend on whether you’re applying it to a bare wooden surface or if it’s been previously coated before. If it’s the latter, then you’d most likely need to sand it first.
• Clean the dust that forms after sanding using a clean rag. I wipe it down further with a tack rag to ensure no dust or debris would still be present the moment I start applying coats.
• As for temperature and humidity, it’s best to apply any kind of marine varnish if the temperatures during the entire day don’t go above 80 degrees Fahrenheit. Humidity should be 50 to 60% or even slightly lower than that. I found that the smartest route to take is to be patient and wait for the right climate before going ahead with a project, especially if you know that it will take a number of days to finish.
• Thinning depends a lot on the product. If it’s too thick, it’s often necessary to do this, even if the brand doesn’t mention it in the instructions. The safest route for this is to follow a 2:1 varnish to thinner ratio. Mineral spirits are recommended.
• I also recommend taking the time to strain the varnish using a paint strainer to ensure a smooth finish. Sometimes, this can make all the difference in the world in getting the kind of finish that any boater would be proud of.
• As for applying coats, there are certain products that require you to start from the middle so that you can ensure an even coating. Others would caution about wiping too much, while many suggest, as is often the case in spar oil-based urethane, to make thin coats for every layer.
• Bristle brushes and badger-hair brushes are often the standard tool for application. But, again, there are products that are easier to apply with a spray or roller.

Most marine varnishes typically last for at least 2 years. There are brands that have a minimum of 3 years before they begin showing signs of damage. I can attest to marine varnish that keeps its shine and protection for 5 years, and I’ve highlighted the exact products that can achieve that.

Ultimately, if you keep its sun exposure to a minimum, you’re guaranteed to extend any kind of varnish’s lifespan. I’ve noticed that varnished fixtures and furniture in my yacht tend to last significantly longer than the ones that are exposed to sunlight extensively, regardless of the varnish’s UV-protective capabilities.

This is almost always the case considering this type of varnish is marine-grade. Most experts attribute this to spar varnish’s flexibility (i.e. its ability to expand and contract with the wood). However, equally many attribute it to the simple fact that spar varnish is mainly oil-based, allowing to wick away moisture with ease.

Now, do you have a good idea of what the best marine varnish brings to the table? With all things considered, the best parting advice I can give is to not hesitate to try out the options available to you. Sure, there will always be no-brainer choices, but it didn’t take long for me to find out that it pays to try out other brands because they may give your boat the kind of shine or longevity you’ve always wanted.

“I am James Harvey – founder of Boating Basics Online. It is established with the drive to help out first-time boaters, which are those desiring to explore their way through the water. So if you are new to boating, start from here with me. “

Practical Boat Owner

• Digital edition

Best boat varnish: 7 top options for gleaming woodwork

• Drew Maglio
• October 13, 2022

Different varnishes do different jobs. Understanding their properties will help you decide what's the best boat varnish for your woodwork. Drew Maglio explains all...

Few things are as quintessential to the archetypal sailboat as gleaming, iridescent woodwork that is indicative of a recent coat with one of the best boat varnish products on the market.

Choosing a product and methodology to apply marine varnish to achieve such results is not as simple as it would seem at first glance however, and this guide aims to make the whole process easier for novice and seasoned boat-owners alike.

First things first, what exactly is boat varnish? Put simply, varnish is a chemical solution of three parts which includes a penetrating oil, resin, and solvent.

Boat varnish for exterior use, aka. “spar varnish” — aptly named because it was designed and envisioned as a flexible protective coating to protect a yacht’s wooden spar in the harsh (outdoor) marine environment — both protects and beautifies a vessel’s wood parts.

It does so by sealing the wood with a somewhat hard, yet flexible, clear protective barrier that can last up to three years of UV and element exposure in temperate climates for the most durable two-part product formulations.

These days, most high-end boat varnishes use tung oil and an alkyld or polyurethane resin. Of the two types of resin, polyurethane — either one or two part — is going to be much more durable and resistant to UV, abrasion, fuel/solvent spills, and impacts.

While a two-part product cannot be applied over a one-part product, a two-part product is going to last much longer and be far more durable. Hence for high traffic areas like cabin soles, a two-part polyurethane product cannot be beat for longevity and durability.

Boaters should be aware that the most onerous task of applying boat varnish is the surface prep, which requires removing all flaking previous coatings by sanding, washing with solvent to degrease the surface, in addition to taping nearby areas to keep the varnish off.

Because of that, I highly recommend using quality products over cheaper, lower cost options which will mean your boat needs revarnishing far more often.

International Perfection Plus two-part varnish

Best polyurethane boat varnish

International Perfection Plus is a well-known two-pot polyurethane

International Perfection Plus (sold in the US under the Interlux brnad) is arguably the best overall marine spar varnish on the market. This two-part polyurethane formulation is not only the most aesthetically spectacular, but also the most durable and longest lasting when exposed to UV.

This two-part product is applied to bare wood after careful sanding and degreasing and can be rolled/brushed or sprayed. It uses a proprietary Interlux thinner and one’s results will be excellent if one follows the recommended procedures to the “t.”

Of all the boat varnish products on this list, this two-part product is probably the least DIY-friendly.

Reasons to buy

• Most durable marine varnish in terms of hardness and flexibility • Best UV resistance • Most beautiful (glossy) varnish if applied properly • Hardness and longevity makes it a prime contender to redo cabin soles and floor boards (after proper surface prep)

Reasons to avoid

• Difficult application for inexperienced laymen • Expensive

Buy International Perfection PLUS two-part varnish on Amazon (UK)

Buy International Perfection PLUS two-part Varnish on Gael Force Marine

Buy Interlux Perfection PLUS two-part varnish on Amazon (US)

Buy Interlux Perfection PLUS two-part varnish on West Marine

Note: We may earn a commission when you buy through links on our site, at no extra cost to you. This doesn’t affect our editorial independence.

Epifanes clear varnish.

Epifanes Clear Varnish includes tung oil and alkyd

Epifanes offers quality marine paints and varnishes at reasonable prices and their Clear High Gloss Varnish is no exception. With 64% solids content (tung oil) and an alkyd base, this varnish is sure to be brilliant in terms of gloss with reasonable durability and longevity.

With one-part alkyd products, boat owners can expect up to two years of protection before maintenance is required if left out in the elements year-round. This product can be brushed, rolled, or sprayed.

• Affordable, quality one-part product • High solids content results in very glossy finish • Relatively easy to apply and achieve satisfactory results

• Not as much UV protection as other offerings • Not as impact or abrasion-resistant as other offerings

Buy Epifanes Clear Varnish on Amazon

Buy Epifanes Clear Varnish on West Marine

International Paints are also sold in the US under the Interlux brand

International Schooner Premish Varnish

A traditional marine spar varnish — albeit a good one — is Interlux’s Schooner Varnish.

With an alkyd base, 47% of tung oil solids, and UV inhibitors to boot, this product is a well-balanced one-part product that is suitable for a variety of uses. This product can be brushed, rolled, or sprayed.

• Affordable, quality one-part product • Well-balanced product in terms of UV protection and solids content • Relatively easy to apply and achieve satisfactory results

• More expensive than Epifanes • Not as impact or abrasion-resistant as some other offerings • Not as much UV protection as some other offerings

Buy International Schooner Varnish on Amazon (UK)

Buy International Schooner Varnish on Gael Force Marine

Buy Interlux Schooner Varnish on West Marine

Total Boat Lust High Gloss Marine Varnish

Best value boat varnish

In recent years, Total Boat has become very popular offering products comparable—and sometimes superior—to the “big three” of Interlux, Petit, and Epifanes, at a fraction of the cost and their “Lust High Gloss Marine Varnish” is no exception. This one-part formulation uses linseed oil and a modified polyurethane base.

• Very affordable one-part proper “marine” varnish • Does not require sanding • Comes in matte for those seeking a satin finish • One-hour re-coat time

• Tends to cure quicker than most varnishes and therefore can cure before properly “flowing out” • Requires 6-8 coats

Buy Total Boat Lust High Gloss Marine Varnish on Amazon (US)

Buy Total Boat Lust High Gloss Marine Varnish on Walmart

Cetol Marine Wood Finish

Best boat varnish for external teak

Cetol has been making alternative wood finishes for a long time. While this product does not have the aesthetic beauty of freshly applied gleaming varnish, it lasts far longer and stands up to UV better than every one-part varnish on this list.

When I had peeling varnish on my 1987 Ericson 38-200 sailboat moored in the tropical Florida Keys, I elected to use Cetol’s “Natural Teak” offering in lieu of varnish and found it incredibly easy to apply and long-lasting, requiring no surface prep to speak up but a quick hand sand and power wash. For outside teak, Cetol cannot be beat.

• Incredibly easy to achieve satisfactory results • Affordable • Long-lasting even when exposed to UV

• Not as beautiful as real varnish • Softer and less durable to impact/abrasion compared to most varnishes, especially polyurethane formulations

Buy Cetol Marine Wood Finish on West Marine

Miniwax Helmsman Spar Urethane

The last product featured on our list is Miniwax’s one-part polyurethane spar varnish. While not the most beautiful finish available, this product is durable (hard and abrasion-resistant), easy to use, and very affordable, making it a good choice for touching up one-part varnishes inside a boat’s cabin.

For repairing, touching up, or even redoing cabin soles, this would also be a decent budget option and therefore is included on this list. Unlike the many UV-resistant offerings on this list, Miniwax Helmsman is not very UV-resistant and therefore is not recommended outdoors.

• Very affordable, even for a gallon • One-part polyurethane enhances durability and longevity over alkyd-based products • Good for sailors on a budget needing to repair and touch up existing interior varnish

• Not as beautiful as alkyd-based marine spar varnished • Not very UV-resistant • Yellows in sunlight

Buy Miniwax Helmsman Spar Urethane on Amazon (US)

Hempel Dura Gloss

Best solvent-based boat varnish

Hempel Dura Gloss Varnish is a urethane modified alkyd, ideal for interior use

Hempel’s Dura Gloss Varnish is a urethane modified alkyd, ideal for interior use

On the downside, alkyd varnishes lack resistance to abrasion and usually only one coat can be applied per day, which can make varnishing a drawn out process.

The more expensive types are formulated to speed up cure times, improve gloss retention and generally last longer.

Buy Hempel’s Dura-Gloss Varnish on Amazon

Varnish properly applied to brightwork is a joy to behold. Photo: Thornton Cohen/Alamy

Which type of boat varnish to choose?

Varnishing often appears to be a simple task, but there’s a bewildering choice of boat varnishes on the market, writes Rupert Holmes.

An understanding of the qualities of different types of varnish is needed to choose the optimum one for each purpose. This is particularly true for exterior woodwork which has to withstand the ravages of sun, rain and frost.

There are only a few basic types of varnish, although in many cases hybrid products are available, particularly alkyd/ tung oil and alkyd/modified urethanes that can offer a wider range of desirable properties.

Polyurethane boat varnish

Polyurethane varnishes are a harder option with good wear resistance, but they lack the flexibility of alkyds. In addition, they tend to sit more on the surface of the timber, so often do not adhere as well to the substrate, which can make them prone to flaking and chipping.

The lack of flexibility makes a pure polyurethane unsuitable for traditionally planked boats, but it can be ideal for plywood , as well as for cold moulded and strip planked hulls.

Polyurethanes are available as both one-pot and two-pot products, the latter giving a harder coating and faster cure, which allows multiple coats to be applied in one day.

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If you need to save the varnish overnight, take a look at this top tip on preserving two-part varnish in the fridge. However, they are a much more expensive option.

N.B. One-pot polyurethane can be applied over two-pot varnish but not the other way round.

Ultra-flexible single-pot polyurethanes, such as Coelan have an elasticity of more than 300%. It can also seal cracks, is highly resistant to impact damage and doesn’t need overcoating for several years and can last twice as long as traditional varnishes.

The biggest downside is that it’s four or five times more expensive than typical basic alkyd varnishes, so up-front costs are higher, although its long term performance means the total cost difference will be smaller.

Many boat varnish products can be painted, sprayed or rolled

Tung oil varnish

Tung oil is also frequently used in traditional varnishes: it soaks in well and, although a pure tung oil product will usually cure very slowly, the final finish is very tough.

Solvent-based varnish

Traditional solvent-based one-pot alkyd varnishes are ideal for use with traditionally built wooden boats. The coating is soft but flexible, which makes it resistant to cracking when used on timber that expands when wet and contracts in dry summer weather. Additionally, the initial coats tend to soak into the timber effectively.

Epoxy resin

Epoxy resin can also be used to coat timber, but generally has poor resistance to ultra-violet light, so a varnish needs to be applied over the top. Beware inexpensive ‘yacht’ varnish sold in DIY stores – the low prices are usually easy to explain in terms of extended drying times or poor long-term performance when used outside.

Dealing with surface damage? Don’t delay!

Whatever type of varnish is used, don’t delay on sealing any areas of damage. The key priority is to keep water out, so don’t wait until you have time and suitable weather for a full repair – touch in the damaged area immediately.

This may not have a silky smooth finish initially, but don’t worry. Even if it’s a few weeks before you’re able to do a proper fix you know there won’t be any further degradation.

Top boat varnish tip

A useful tip is to clean out one of the small match pots DIY stores sell to enable customers to test household colour schemes and fill it with varnish. They have a brush built into the lid, which never needs to be cleaned, thus making a quick touch up of damage a task that only takes a couple of minutes.

Find out how to get the best finish with these 8 top tips for varnishing .

Didn’t find what you’re looking for? Head to Amazon’s dedicated boating page for more marine products.

Best Marine Varnishes in 2024

When it comes to pro­tect­ing and enhanc­ing the beau­ty of wood sur­faces on boats, marine var­nish­es are the go-to solu­tion for boaters and marine enthu­si­asts. Check our top choic­es:

Most reviewed

Table of Con­tents

Top 5 Best Marine Varnishes

Deter­min­ing the best marine var­nish involves con­sid­er­ing var­i­ous fac­tors such as dura­bil­i­ty, UV resis­tance, ease of appli­ca­tion, and over­all per­for­mance. While per­son­al pref­er­ences and spe­cif­ic project require­ments may vary, there are sev­er­al marine var­nish­es that con­sis­tent­ly receive pos­i­tive reviews and are com­mon­ly regard­ed as top choic­es:

• Epi­fanes Clear Var­nish
• Inter­lux Schooner Var­nish
• Total­Boat Gleam Marine Spar Var­nish
• Pet­tit Cap­tain’s Var­nish
• Epi­fanes Wood Fin­ish Gloss

1. Epifanes Clear Varnish

Epi­fanes is well-known for pro­duc­ing high-qual­i­ty marine var­nish­es. Their clear var­nish offers excel­lent pro­tec­tion against UV rays, water, and weath­er­ing. It is high­ly durable and pro­vides a glossy, smooth fin­ish. Epi­fanes var­nish­es are known for their ease of appli­ca­tion and abil­i­ty to enhance the nat­ur­al beau­ty of wood.

• Need to wait for it to dry

2. Interlux Schooner Varnish

Inter­lux Schooner Var­nish is a pop­u­lar choice among boaters. It offers supe­ri­or gloss reten­tion, UV resis­tance, and long-last­ing pro­tec­tion. This var­nish pro­vides a rich, high-gloss fin­ish and is easy to apply. It is suit­able for both inte­ri­or and exte­ri­or wood sur­faces.

• More expen­sive

3. TotalBoat Gleam Marine Spar Varnish

Total­Boat Gleam Marine Spar Var­nish is a high-qual­i­ty, high-gloss var­nish that pro­vides excel­lent pro­tec­tion for wood sur­faces. It is for­mu­lat­ed to resist UV dam­age, water, and weath­er­ing, mak­ing it ide­al for marine envi­ron­ments. The var­nish is self-lev­el­ing and offers a durable, clear fin­ish.

• Not as durable as oth­ers

4. Pettit Captain’s Varnish

Pet­tit Cap­tain’s Var­nish is a tra­di­tion­al marine var­nish that has stood the test of time. It offers supe­ri­or pro­tec­tion against the ele­ments and has excel­lent flex­i­bil­i­ty, mak­ing it ide­al for wood­en boats. This var­nish pro­vides a rich, amber fin­ish and is known for its dura­bil­i­ty and long-last­ing per­for­mance.

5. Epifanes Wood Finish Gloss

Epi­fanes Wood Fin­ish Gloss is a high-build var­nish that offers excep­tion­al UV pro­tec­tion and dura­bil­i­ty. It pro­vides a beau­ti­ful, high-gloss fin­ish and is resis­tant to water, chem­i­cals, and abra­sion. This var­nish is renowned for its long-last­ing per­for­mance and ease of appli­ca­tion.

• Not begin­ner-friend­ly

TIP: Prop­er­ly pre­pare the wood before apply­ing it. The wood should be clean and free of debris, and any exist­ing coat­ings should be com­plete­ly removed. Sand the wood light­ly with a fine-grit sand­pa­per and then apply the var­nish in thin, even coats, allow­ing each coat to dry ful­ly before apply­ing the next. Use a nat­ur­al-bris­tle brush when apply­ing the var­nish and to avoid over­work­ing the var­nish to min­i­mize brush marks. Fol­low man­u­fac­tur­er instruc­tions for the num­ber of coats and dry­ing times for best results.

Best Marine Grade Polyurethane

The best marine grade polyurethane is one that is specif­i­cal­ly designed and for­mu­lat­ed for use in marine envi­ron­ments. It should be water resis­tant, UV resis­tant, and have a high lev­el of abra­sion and wear resis­tance. To com­ple­ment it You might think of teak seal­ers that will help a lot. It should also have excel­lent adhe­sion qual­i­ties and be able to with­stand extreme tem­per­a­tures, salt water, and humid­i­ty. It should be easy to apply and have a long-last­ing fin­ish.

There are a few top choic­es known for their dura­bil­i­ty, pro­tec­tion, and over­all per­for­mance in marine envi­ron­ments. Here are three high­ly regard­ed marine-grade polyurethane options:

• Epi­fanes Clear Gloss Var­nish : Epi­fanes is a renowned brand in the marine indus­try, and their Clear Gloss Var­nish is high­ly regard­ed for its excel­lent UV resis­tance, weath­er resis­tance, and long-last­ing pro­tec­tion. It pro­vides a beau­ti­ful high-gloss fin­ish, enhances the nat­ur­al wood beau­ty, and offers excep­tion­al dura­bil­i­ty against the harsh marine ele­ments.
• Total­Boat Lust Marine Var­nish : Total­Boat Lust Marine Var­nish is anoth­er pop­u­lar choice known for its excep­tion­al per­for­mance. It offers a clear, high-gloss fin­ish that enhances the wood’s appear­ance and pro­vides excel­lent UV pro­tec­tion. This var­nish is for­mu­lat­ed to resist crack­ing, peel­ing, and yel­low­ing, ensur­ing long-last­ing pro­tec­tion for your boat’s wood sur­faces.
• Inter­lux Schooner Var­nish : Inter­lux Schooner Var­nish is a tra­di­tion­al marine-grade polyurethane var­nish that has stood the test of time. It offers out­stand­ing pro­tec­tion against UV rays, salt­wa­ter, and harsh weath­er con­di­tions. This var­nish pro­vides a high-gloss fin­ish, enhances the nat­ur­al wood grain, and offers excel­lent dura­bil­i­ty for marine appli­ca­tions.

Good marine grade polyurethane should be non-tox­ic and safe for the envi­ron­ment, as well as being durable enough to with­stand harsh weath­er and UV radi­a­tion. The best polyurethanes should also pro­vide a smooth, glossy, and attrac­tive fin­ish, as well as being easy to clean and main­tain. It should be able to stand up to the con­stant expo­sure to water, salt, and sun, as well as being resilient enough to with­stand bumps, knocks, and scrapes. It should be afford­able and easy to find.

Types of Marine Varnish

Mar ine var n ish is a type of coat­ing that is used to pro­tect wood , met­al , and oth­er sur­faces from the ele­ments . It pro­vides a hard , durable fin­ish that is resis­tant to UV rays , water , and oth­er envi­ron­men­tal con­di­tions . There are sev­er­al types of marine var n ish avail­able , includ­ing al ky d , phen olic , and poly ure th ane .

• Tra­di­tion­al Spar Var­nish : Tra­di­tion­al spar var­nish is a pop­u­lar choice for marine appli­ca­tions due to its excel­lent dura­bil­i­ty and UV resis­tance. It typ­i­cal­ly con­tains a blend of nat­ur­al resins, such as tung oil or lin­seed oil, com­bined with phe­no­lic or alkyd resins. Spar var­nish­es are known for their high gloss fin­ish and abil­i­ty to with­stand harsh weath­er con­di­tions.
• Two-Part Polyurethane Var­nish : Two-part polyurethane var­nish­es pro­vide excep­tion­al dura­bil­i­ty and pro­tec­tion against UV rays and salt­wa­ter. These var­nish­es con­sist of a resin and a hard­en­er, which must be mixed before appli­ca­tion. They offer a high-gloss fin­ish, excel­lent abra­sion resis­tance, and are often con­sid­ered the most durable option for marine appli­ca­tions.
• Water-Based Var­nish : Water-based var­nish­es have gained pop­u­lar­i­ty due to their low VOC (volatile organ­ic com­pound) con­tent and ease of appli­ca­tion. These var­nish­es offer good pro­tec­tion against UV rays and are gen­er­al­ly more envi­ron­men­tal­ly friend­ly. They dry faster than tra­di­tion­al var­nish­es and pro­vide a clear, satin, or mat­te fin­ish.
• Epoxy Var­nish : Epoxy var­nish­es are known for their excep­tion­al dura­bil­i­ty and mois­ture resis­tance. They are often used as an under­coat or primer before apply­ing a final var­nish lay­er. Epoxy var­nish­es can pen­e­trate the wood, pro­vid­ing excel­lent adhe­sion and pro­tec­tion against mois­ture intru­sion.
• Spar Ure­thane Var­nish : Spar ure­thane var­nish­es com­bine the dura­bil­i­ty and UV resis­tance of polyurethane with the flex­i­bil­i­ty and mois­ture resis­tance of tra­di­tion­al spar var­nish­es. These var­nish­es offer good pro­tec­tion against weath­er­ing and are suit­able for both inte­ri­or and exte­ri­or marine appli­ca­tions.

Al ky d var n ish­es are more com­mon­ly used for inte­ri­or wood and met­al sur­faces , while phen olics and poly ure th anes are often used for exte­ri­or sur­faces . Each type of marine var n ish has its own char­ac­ter­is­tics and ben­e­fits , so it is impor­tant to select the right one for the job .

Alkyd Marine Varnish

Alkyd marine var­nish is the tra­di­tion­al choice for marine appli­ca­tions. It is gen­er­al­ly more afford­able than polyurethane and is eas­i­er to apply. Alkyd marine var­nish is also more flex­i­ble than polyurethane and is bet­ter at resist­ing crack­ing and peel­ing.

• More afford­able than polyurethane
• Eas­i­er to apply
• More flex­i­ble than polyurethane
• Bet­ter at resist­ing crack­ing and peel­ing
• Does not have as good UV pro­tec­tion as polyurethane
• Can yel­low over time
• Not as resis­tant to mildew and fun­gus

Al ky d Marine V arn ish is a type of wood fin­ish that is designed to pro­tect wood sur­faces on boats and oth­er marine ves­sels from the harsh ele­ments of the ocean . It is made from a resin that is high­ly resis­tant to UV rays , salt water , and mois­ture , mak­ing it ide­al for out­door use . Al ky d Marine V arn ish is easy to apply and pro­vides a beau­ti­ful , glossy fin­ish that is sure to pro­tect your boat for years to come .

Polyurethane Marine Varnish

Polyurethane marine var­nish is the new­er, more mod­ern ver­sion of marine var­nish. It is more expen­sive than alkyd, but it is also much more durable. Polyurethane marine var­nish has excel­lent UV pro­tec­tion and is more resis­tant to mildew and fun­gus.

• Excel­lent UV pro­tec­tion
• More resis­tant to mildew and fun­gus
• More durable than alkyd
• Does not yel­low over time
• More expen­sive than alkyd
• More dif­fi­cult to apply
• Not as flex­i­ble as alkyd

Poly ure th ane marine var n ish is a pro­tec­tive coat­ing used on wood sur­faces that are exposed to marine envi­ron­ments . It is typ­i­cal­ly used on boats or oth­er items that are exposed to salt water , sun , and mois­ture . Poly ure th ane marine var n ish is designed to pro­vide supe­ri­or pro­tec­tion against the ele­ments , with a high lev­el of UV pro­tec­tion and water resis­tance . This type of var n ish also offers a beau­ti­ful fin­ish that is easy to apply and main­tain .

Choosing the Best Marine Varnish

When choos­ing the best marine var­nish, it is impor­tant to con­sid­er the appli­ca­tion and envi­ron­ment. If the wood is exposed to direct sun­light and harsh ele­ments, it is best to choose a polyurethane marine var­nish. If the wood is not exposed to direct sun­light and harsh ele­ments, an alkyd marine var­nish may be the bet­ter choice.

Look for a marine var­nish that offers excel­lent dura­bil­i­ty to with­stand the harsh con­di­tions encoun­tered in a marine envi­ron­ment. It should be resis­tant to UV rays, salt­wa­ter, mois­ture, and tem­per­a­ture fluc­tu­a­tions.

UV resis­tance is cru­cial to pre­vent the var­nish from fad­ing, yel­low­ing, or degrad­ing under pro­longed expo­sure to sun­light. Opt for a var­nish with high UV resis­tance to main­tain the appear­ance and integri­ty of your wood sur­faces.

Con­sid­er the desired lev­el of gloss for your wood sur­faces. Marine var­nish­es typ­i­cal­ly offer a range of gloss options, from high gloss to satin or mat­te fin­ish­es. Choose a var­nish that aligns with your aes­thet­ic

Look for a marine var­nish that is easy to apply, even for indi­vid­u­als with lim­it­ed expe­ri­ence. Con­sid­er fac­tors such as brusha­bil­i­ty, self-lev­el­ing prop­er­ties, and whether it requires thin­ning or mul­ti­ple coats for prop­er cov­er­age.

The dry­ing time of the var­nish is an impor­tant con­sid­er­a­tion, espe­cial­ly if you have time con­straints or need to com­plete the project with­in a spe­cif­ic time­frame. Some var­nish­es have quick­er dry­ing times, while oth­ers may require longer cur­ing peri­ods.

Ensure that the marine var­nish you choose is com­pat­i­ble with the type of wood you are work­ing with. Dif­fer­ent var­nish­es may have spe­cif­ic rec­om­men­da­tions for use on par­tic­u­lar wood species, so ver­i­fy com­pat­i­bil­i­ty before appli­ca­tion.

Con­sid­er the ease of main­te­nance and repair for the var­nish. Look for a var­nish that allows for easy touch-ups or refin­ish­ing with­out requir­ing com­plete strip­ping and reap­pli­ca­tion.

Application

When apply­ing marine var­nish, it is impor­tant to fol­low the man­u­fac­tur­er’s instruc­tions. Marine var­nish must be applied in thin, even coats for best results. A foam brush or roller is the best way to apply the var­nish, as it will help pre­vent any drips or runs. The var­nish should be allowed to dry com­plete­ly between coats, and the num­ber of coats will depend on the type of var­nish being used.

Preparing the Surface

Before apply­ing the marine var­nish, it is impor­tant to prop­er­ly pre­pare the sur­face. The wood should be sand­ed with a fine grit sand­pa­per and all debris should be removed. The wood should also be wiped down with a damp cloth to remove any dust or dirt. Any flaws in the wood should be filled in with a wood filler before apply­ing the marine var­nish.

Applying the Marine Varnish

Once the wood is pre­pared, the marine var­nish can be applied. It is impor­tant to work in a well-ven­ti­lat­ed area and to wear pro­tec­tive cloth­ing, such as gloves and a res­pi­ra­tor mask. A foam brush or roller is the best way to apply the var­nish, as it will help pre­vent any drips or runs. The var­nish should be allowed to dry com­plete­ly between coats, and the num­ber of coats will depend on the type of var­nish being used.

Maintenance and Repair

To keep marine var­nish look­ing its best, it is impor­tant to per­form reg­u­lar main­te­nance and repairs. The wood should be cleaned reg­u­lar­ly with a mild soap and water solu­tion. If the wood becomes scratched or dam­aged, it should be sand­ed and re-var­nished.

Repairing Scratches

Scratch­es in the marine var­nish can be repaired by sand­ing them with a fine grit sand­pa­per and then re-var­nish­ing the area. It is impor­tant to use a fine grit sand­pa­per, as a coarse grit sand­pa­per can dam­age the wood.

Repairing Cracks

Cracks in the marine var­nish can be repaired by apply­ing a flex­i­ble adhe­sive to the crack and then re-var­nish­ing the area. It is impor­tant to use a flex­i­ble adhe­sive, as it will help pre­vent the crack from return­ing.

What is the best varnish for a boat?

The best var­nish for a boat depends on the type of wood and the desired fin­ish. Gen­er­al­ly, for out­door use, a high-qual­i­ty marine spar var­nish is rec­om­mend­ed. It is typ­i­cal­ly a long-last­ing, pro­tec­tive fin­ish that will retain its gloss and flex­i­bil­i­ty in the harsh marine envi­ron­ment. When apply­ing any var­nish, it is impor­tant to ensure the wood is prop­er­ly pre­pared and the var­nish is applied cor­rect­ly in mul­ti­ple thin coats.

When select­ing a marine spar var­nish, con­sid­er the cli­mate you are in, as some are bet­ter suit­ed to warm and humid cli­mates and oth­ers to cold cli­mates. Also con­sid­er any spe­cif­ic needs you have, such as UV pro­tec­tion or a high-gloss fin­ish. It is often ben­e­fi­cial to choose a var­nish that con­tains UV inhibitors and mildew­cides to pro­tect your boat from the ele­ments. Look for a var­nish that is easy to apply, has good adhe­sion and is resis­tant to crack­ing, peel­ing and yel­low­ing.

What is the hardest marine varnish?

The hard­est marine var­nish is a var­nish that con­tains high amounts of UV absorbers, chem­i­cal sta­bi­liz­ers and alkyd resins. This com­bi­na­tion of ingre­di­ents pro­vides a hard­er and more durable fin­ish that is resis­tant to crack­ing, fad­ing and dis­col­oration over time. It also pro­vides supe­ri­or pro­tec­tion from salt­wa­ter and oth­er envi­ron­men­tal ele­ments.

It is also for­mu­lat­ed to be resis­tant to abra­sion and wear, mak­ing it an ide­al choice for boats and oth­er marine appli­ca­tions. It is also com­mon­ly used on out­door fur­ni­ture, shut­ters, and oth­er exte­ri­or sur­faces that are exposed to the ele­ments. This type of var­nish is also often used on masts and spars, as it pro­vides excel­lent pro­tec­tion against ultra­vi­o­let radi­a­tion and oxi­da­tion.

What is the best marine varnish for wood?

Deter­min­ing the best marine var­nish for wood depends on var­i­ous fac­tors such as gloss lev­el, dura­bil­i­ty, and UV resis­tance. Some top choic­es in the mar­ket include Epi­fanes Clear Var­nish, Inter­lux Schooner Var­nish, and Total­Boat Lust Marine Var­nish.

Epi­fanes Clear Var­nish is renowned for its high gloss fin­ish and excel­lent UV resis­tance. Inter­lux Schooner Var­nish offers dura­bil­i­ty and a beau­ti­ful amber hue that enhances the nat­ur­al beau­ty of wood. Total­Boat Lust Marine Var­nish is known for its easy appli­ca­tion, long-last­ing pro­tec­tion, and excep­tion­al gloss reten­tion. Con­sid­er your spe­cif­ic needs and pref­er­ences to choose the marine var­nish that best suits your project and pro­vides opti­mal pro­tec­tion for your boat’s wood sur­faces.

What is the difference between marine varnish and regular varnish?

Marine var­nish is specif­i­cal­ly for­mu­lat­ed to with­stand the harsh con­di­tions encoun­tered in marine envi­ron­ments, such as expo­sure to UV rays, salt­wa­ter, and mois­ture. It offers enhanced dura­bil­i­ty and pro­tec­tion com­pared to reg­u­lar var­nish­es, mak­ing it suit­able for boat appli­ca­tions.

How many coats of marine varnish should I apply?

The num­ber of coats required can vary depend­ing on the spe­cif­ic marine var­nish and the con­di­tion of the wood sur­face. In gen­er­al, it is rec­om­mend­ed to apply mul­ti­ple thin coats rather than a sin­gle thick coat. This helps achieve prop­er cov­er­age, improves adhe­sion, and allows for bet­ter con­trol over the fin­ish.

Can I apply marine varnish over an existing finish?

It is pos­si­ble to apply marine var­nish over an exist­ing fin­ish, pro­vid­ed that the sur­face is prop­er­ly pre­pared. The exist­ing fin­ish should be clean, dry, and free from any loose or flak­ing mate­r­i­al. Light sand­ing or strip­ping may be nec­es­sary to cre­ate a suit­able sur­face for the marine var­nish to adhere to.

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The Best Marine Varnishes for 2024

Boats often come in contact with a lot of different pressures such as waters, rocks, and even animals. On top of this, it is also exposed to the sun’s harmful UV rays all of the time. With this, the need for marine varnish became extremely popular among boat owners. It is actually one of the most effective things that any boat owner can do to preserve the beauty of their boat.

However, it is not that easy to find the perfect marine varnish that will work wonders for our boats. We have to experience a lot of trial and errors before we finally find what specific marine varnish is best for our lovely ships.

Do you want to keep your boat as pristine as possible? Read on to know about the top 10 best marine varnishes!

1. Rust-Oleum 207008 Marine Spar Varnish

2. epifanes clear varnish, 3. totalboat lust marine varnish, 4. system three 1855s16 marine spar varnish, 5. minwax 630500444 helmsman spar urethane, 6. interlux iva316/qt cetol natural teak varnish, 7. mccloskey man o’war spar marine varnish, 8. old masters 92304 spar marine varnish, 9. pettit captains varnish, 10. interlux y60/pt goldspar satin varnish, who is this for, factors to consider when buying a marine varnish, advantages and disadvantages of using a marine varnish, care and maintenance, frequently asked questions, best marine varnish reviews.

I was so stunned by this beautiful marine varnish! When I received it, I could immediately tell that it will perform amazingly. I sincerely appreciate that the company made sure that the application process will be easy! All I needed was a foam paintbrush to apply it on my boat’s surface and a good quality sanding sponge to smooth out the wood surface for a clean and even coat.

Unlike other varnishes, the company advises its customers to skip the thinner before using this product because it will affect the varnish’s performance by prolonging the drying time and increasing the chances of bubble formation.

Now, the most notable thing that I love about this product is that it dries so quickly! After the 1st layer that I applied on my boat, it only took roughly 2 hours for the spar varnish to dry. I am so flabbergasted because it was so convenient to use!

I love how I did not need to wait for at least 12 hours just to apply the 2nd coat of this marine varnish! This is such a good deal because not everyone has the time to let the varnish sink in. Although, you still have to sand the boat before applying the 2nd layer of varnish so that your application will glide as smoothly as butter!

As an oil-based marine varnish, it is better than a water-based marine varnish because it provides a more vivid color with a shine that does not look dull! Even though it is a little bit runny, its consistency does not affect its performance because it is oil-based. It sticks to the wood more comfortably, which is actually one of the reasons why it dries quicker!

• It does not require a thinning agent.
• Even application
• A quick drying time of 2 hours
• Can do two coats in one day
• Vivid and shiny
• It has a runny consistency

I have nothing to say but outstanding! I cannot get over the fact that this marine grade spar varnish performs exceptionally well. I am so excited to use this on my other boats because I’m sure that it will provide the perfect coating for protection and aesthetics!

First of all, I love how this product does not smell too strong! That’s one of the many things that I love about this epifanes marine spar varnish. Because of my countless attempts at finding the best spar varnish, I know how stinky some varnishes could be. It really is a hassle because some products have strong smells that give me a headache.

But this one was delightful to use because it almost does not have a strong chemical smell! I spent a lot of time using this spar varnish, and I can safely say that I did not experience any headaches.

I used a thinning agent before the first coat for this varnish because this product’s consistency is quite thick, almost similar to a syrup’s texture. Doing this resulted in a deep, high-gloss, and smooth finish! I cannot get enough of how beautiful the finished product is.

The company recommends a total of 8 coats, but I achieved my desired deepness and intensity with just five coats. Because of this, I have enough left varnish left for future use, which I sincerely appreciate!

I especially love that this product gives off a dark amber color. I prefer this type of finish because it made my boat look rustic yet fresh at the same time! And because it is on the darker side, it can cover old stains that may be present on your boat, so technically, it is a varnish and a light paint in one!

The wood on my boat started to look really nice once the spar varnish has dried. At the end of the day, it looked brand-new and ready to take on the fiery waters!

• It does not smell too strong.
• It did not give me headaches due to the chemical scent.
• Thick consistency
• Varnish and paint in one
• The recommended number of coats is 8

I think that is such a steal! For just half the container, I was able to apply five coats, and my boat looked very beautiful instantly. If I were you, I would get my hands on this beautiful spar varnish!

I received this totalboat gleam marine spar varnish; it was love at first sight! I immediately started to use it, and upon the initial application, I love how it enhances the woodgrain feature of my boat. Unlike other spar varnishes, this one does not try to eliminate the texture of wood; it makes it look more pleasing to the eyes!

Another thing that made my heart fall for this varnish is that it does not require the use of a sanding sponge or sandpaper. As I said, it aims to enhance the wood’s texture, so there is no need to even it out.

I also enjoy how with just six coats, I was able to finish varnishing my entire boat in one day. This made me fall head over heels for this product!

I also appreciate that this product features a slight tint that improves the overall design of the boat. No, it does not entirely cover up the boat’s original color; it makes the actual color brighter and more alive. I have had some experience with varnishes that dulls down the boat’s original hue, so I am happy that this one does not do that!

Lastly, the company offers two different types of varnish – one matte and one high gloss. Personally, I prefer a high gloss spar varnish because it lessens the appearance of scratches. However, some people enjoy matte varnishes, so kudos to TotalBoat for providing boat owners such as me with options!

Although it is quite thick, and I had to reapply varnish on some parts because, for some reason, the material does not adhere to it, I was still left with a beautifully-varnished boat at the end of the day!

• Improved my boat’s woodgrain texture
• It does not require sanding.
• Enhanced the color of the boat
• It has two different kinds of varnish
• I had to reapply varnish on several areas

To sum it up, I am so glad that I was able to try this product! For such a long time, I have been looking for the varnish that has a perfect balance between tint and gloss, and I finally found it in this product!

Upon receiving the product, I ordered both variants: satin and high shine. I decided to combine the two types of finish to get a more solid hue without losing the varnish glossiness.

I think I made the right decision! The end product is exceptionally smooth, glossy, and stable at the same time. I love how it is as soft as a baby’s butt… maybe even softer!

Because its consistency is quite thick, I used an HV/LP sprayer to apply it. This product applies like a dream. I’ve never used a marine varnish as smooth as this before. Therefore, the use of a thinning agent is totally necessary since it is viscous.

I also find its consistency to be quite thick. I love how this product really gave me the option to have my varnish on the thicker side or on, the thinner side. Well, I opted to thin it out a little bit using a thinning agent.

I love how it applies! For me, I would not use a bristled paintbrush with this product because there is a chance for bubble formation and streaky application. So, I used an HV/LP sprayer to apply it, and I honestly did not get tired at all!

I got so excited because I have never used a marine varnish that was as smooth as this before! I personally prefer mixing it with a thinning agent for the sprayer, but if you want it to be thicker, you may want to use a new paint roller to do the job.

Even though this does not dry as quickly as the other spar varnishes I have tried, I think those good things really do come to those who wait. As I used this product, I learned to be patient and to keep on trusting the process.

In the end, I got the best-looking boat ever! On top of that, this one also has superior saltwater protection for my boat. I can honestly tell you this: I think this is such a great deal!

• Available in satin and high shine
• Thick consistency for fuller application
• Best used with a paint sprayer
• Saltwater protection
• Excellent finish if both variants are mixed.
• Long drying time

Honestly, I think I got such an excellent deal with this product. This could easily be the best marine varnish UV protection!

This one is for the boat owners who prefer marine varnishes without any tint! This product from Minwax is a water based marine varnish, and this means that it is a clear gloss that does not have any color to it.

I love how this could be used on top of colored boats. Since it does not alter the existing shade that the ship has, this is a good option for those who prefer to maintain the current color, brightness, and contrast of their boats.

Its consistency is thin, mostly because it is water based. With this, I used a paint roller. I got the most seamless application because a thin consistency goes well with a roller! I am in awe that I only had to use a sanding sponge or sandpaper before applying the first coat. The succeeding layers did not require any sanding because they glide on like a dream!

Overall, it took me a total of 4 coats to get an excellent finish. However, I added an extra layer to be sure that the end product will be as beautiful and vibrant as possible.

I love how to apply this even over latex paint, unlike other varnishes with spar polyurethane as an ingredient.

This goes to show how dedicated the company is to provide us with quality products that won’t be inconvenient to use.

The only issue that I came across is that it tends to crack whenever I suddenly apply too much. I was able to remedy this by ensuring that each layer is skinny to avoid any separation of the varnish.

• It does not have a tint
• It does not affect the original color of the boat
• It can be used over latex paint
• It has a tendency to crack if too much is applied
• Thin application per layer is needed

This one is indeed a tremendous marine varnish to let the right color of your boat shine through. I highly recommend this beautiful marine varnish!

I have to say that this product is a rare breed! There are two common types of marine varnishes, and these are the high gloss and the matte variants. It is uncommon for the market to offer a satin varnish. Satin is a cross between a high luster and a matte finish; it has a shine, but it is also relatively flat. Basically, it is the best of both worlds!

My boat is made of a wood called teak. Honestly, I believe that this product from Interlux is the best marine varnish for teak! I did not have to use any unique tool to make it look splendid. No thinning agent and sandpaper had to be used because this boat varnish already does a great job in penetrating teak and, honestly, other types of wood effectively!

This product has a golden hue. It is the perfect shade for my boat’s wood! I love how it made my boat look expensive and well-kept. It also has a knack for giving a boat its personality!

I was able to see it personally because my boat’s color has already faded. But soon after applying this boat varnish, its color started to come alive! It slowly became brighter and radiant. Suddenly, my faded boat transformed into a beautiful ship with a rich and deep copper hue.

Even though this product can only be applied right above the waterline both for interior and exterior portions of the boat because it is not effective against saltwater, it is still not a bad deal because this varnish is not only useful for boats. It can also be used as an alternative for tables, chairs, and doors!

• Satin finish
• Penetrates teak effectively
• It has a golden hue
• Alternative varnish for tables, chairs, and doors
• Only useful above the waterline
• Not effective against harsh saltwater

Because of the fantastic quality that this product offers, I simply cannot get enough! I’m sure that I will be using it again soon for my other boats.

This marine grade spar varnish proves that a boat undergoes a lot of adverse conditions both while sailing and while being stored. As a varnish, I love how this product is very well-versed when it comes to being durable!

I am so amazed because it does not peel easily, unlike other marine varnishes that I have used in the past. It stays put for a long time, and it does not crack. It is very different from polyurethane-based varnishes because this one from McCloskey/Valspar screams flexibility. It has the power to adhere onto various surfaces, and it sinks deep into the wood quite decently.

It is made with tung oil instead of urethane. It can be seen as old-school because it does not have the synthetic material that modern varnishes contain, but whoever said that old-school is terrible? Actually, tung oil is useful, and it gives off a beautiful finish!

I specifically go crazy about this product because it is thick and pigmented enough to provide a certain degree of coverage. I love that it is useful as a corrector; it completely covers the tiny scratches and stains on my boat’s surface!

But still, this product is not advised to be applied on decks. It is a high gloss varnish, so when it gets wet, there is an excellent chance for the surface to become extra slippery. To avoid accidents on the deck, I decided to apply a matte marine varnish instead.

• Extremely durable
• It does not peel and crack easily.
• Flexible; can be used on different surfaces.
• Made with tung oil
• Thick and pigmented
• Can cover stains and scratches
• It can’t be used on the deck
• Slippery when it gets quite wet

For me, I will still go for this product even though I can’t use it on my deck. It gives some of the best gloss that I have seen, and it is very durable!

What a beautiful product! All I can say is wow! This marine varnish is quite exceptional! This company really is the Old Master of the varnish industry. The sun is known to be a catalyst for the faster aging process of wood and paint, which results in brittle and faded-looking boats.

I am so happy that I have this product, which is perfect for absorbing the sun’s harmful UV rays, so it worked well as my boat’s exterior marine varnish! I love how it can be used above and below the waterline so I could still protect the bottom half of my ship from fading quickly.

Although this product works well as exterior spar varnish, I am in awe because it is also useful as an interior varnish! Because of its satin finish, the deck would not feel slippery even when the area is wet. I love how the safety of all riders is guaranteed because of this varnish!

However, it took me three days to finish the entire application process because the drying time took 5-8 hours per each coat. But even though the process took quite some time, I was not disappointed with the result that I got!

After patiently applying eight coats, I was left with the most marvelously looking boat! It seemed very mysterious; not too shiny, not too matte. Now, my boat has the perfect coating!

• Absorbs the sun’s harmful UV rays
• Perfect as an exterior marine varnish
• It can be used below the waterline.
• Also great for interior portions of the boat
• It prevents boat aging and fading
• Not too shiny, not too matte
• The drying time is 5-8 hours per each coat

Because of this product, I am so glad! I was left with a good-looking and well-protected boat. I could not ask for more!

I am so happy that this product is a water based marine polyurethane varnish. It can be challenging to find a glossy varnish that is water based because most glossy varnishes are oil based. Because of this, I am always on the hunt for a water based product that is a high gloss, and finally, here it is!

I love that this product is exceptionally eco-friendly because it does not contain VOCs or volatile organic compounds, which can be harmful. Varnishes usually release these, and long-term exposure to these chemical compounds can result in long-term health effects.

I am so relieved to finally see a marine varnish that does not negatively affect humans and species that reside in water. I love how this company went the extra mile just to give us a healthier alternative to the usual varnish formula that we get in the market!

Another reason to stan this product is its exceptional clarity! Upon using this, I could immediately say that it produces a very smooth, flexible, and clear varnish. I am so happy because I did not have a hard time applying it on the boat.

I really like how this varnish was able to encourage the improvement of my boat’s woodwork! It did not weirdly interact with the ship, and it actually sank into the wood utterly. This is one of the best features of this product!

Now, let me tell you about its leveling property! This is the smoothest and most even varnish application I have ever experience. I love that it glides on smoothly and allows room for error. You can go over a wet varnish as many times as you want!

• High gloss, even though it is water based.
• Eco-friendly
• It does not produce volatile organic compounds.
• It does not pose harmful health problems.
• Exceptional clarify
• Improves woodwork
• Amazing leveling property
• Allows room for error during application

As a water based varnish, I cannot believe that this is as amazing as it is! If I were you, I would stock up on this product, especially if you have multiple boats!

Indeed, a fantastic product! This marine polyurethane varnish gave my boat an amazingly bright and lively hue. I love how it did not change my boat’s color; it only brightened it up by introducing a nice sheen on top of it!

For this one, I decided to use a bristled paintbrush because it made the application smoother and more even. It went on in a more uniform layer, which makes layering seamless and effortless! Even though it has a thick consistency, it works well with a brush. I love how it did not form any air bubbles!

Because it is quite thick, the drying time is kind of long. I applied it for a total of two days, and on the first day, when the temperature was low in humidity with excellent air circulation, each coat was able to dry for just 5 hours. However, the weather was a little more humid on the second day, and each coat dried for 7 hours.

I love how hard this product is once it is dry! Because of its thick consistency, it was able to cover my boat’s surface better than other marine varnishes. It can resist stains, scratches, and other minor physical damages that roaring waters and sharp rocks can cause. I love how I can be assured that my boat will look its best even when I sail rough waters!

When I started to check how it feels inside the boat, I was taken aback because it did make a huge difference! I thought that the interior had a new coating, but it did not feel slippery at all. I can assure you that this marine grade varnish for wood is very useful in providing a safe surface for passengers!

I am quite disappointed with this because obviously, one of the main reasons why we, boat owners, invest in great marine varnishes is because of its UV protection. Although this product offers a great sheen and exceptional thickness, it, unfortunately, cannot prevent the boat from aging and fading.

• A modified version of polyurethane
• Did not form any air bubbles and streaks
• Thick consistency offers excellent protection.
• Resists stains, scratches, and other minor physical damages
• Not slippery
• It does not have UV protection.
• It can’t protect my boat from aging and fading.

I am very fond of this product. I can see myself using it more in the future, although it will work best as an interior marine varnish!

The marine varnish is for people who are passionate about improving their boats’ appearance. Other than that, it can also be used as a substitute for the typical varnish that is used for daily materials such as doors, windows, chairs, and tables.

Boat Owners

The marine varnish is for boat owners because they take pride in their boats’ beauty and maintenance . Boat owners need to apply marine varnish on their ships because it protects the wood against the rigorous events that take place while sailing.

Marine Artists

Marine artists also need marine varnish because they are responsible for doing the dirty work that most boat owners prefer not to do. They get paid to paint, design, and apply varnish on boats so that the wood is protected and well-maintained.

Varnishing is an essential aspect of carpentry because it strengthens wood. It provides a protective layer between the wood and the outside world, which could pose harmful threats to the wood.

Marine varnish, sometimes referred to as spar varnish, is a term that is quite famous in the boating world. This specific type of varnish is a finish specially designed to protect boats from the harsh conditions they experience during sailing. It is one of the essential materials that a boat owner has in their arsenal of boating essentials.

There are a lot of different options when it comes to purchasing a marine varnish. Here are some of the best features that you might want to consider before buying one:

UV Protection

This is the main reason why marine varnish was specifically made is for it to act as a UV blocker against the sun’s damaging UV rays. As you shop for your next varnish, it is vital to make sure that you are getting one that has the best marine varnish UV protection because it will help to prolong your boat’s life.

Remember that a protected boat will always remain on top of its game. It will not age, fade, and get damaged easily.

High Gloss, Satin, or Matte

There are three different finishes that marine varnish comes in:

It will make your boat appear new and shiny. This variant is best used for the boat’s exterior area because it tends to become too slippery if used inside the ship. Accidents may happen, such as accidental slips, which could result in harmful injuries.

As you can tell, this finish is entirely flat and free of any shine and gloss. This is the best choice for your boat’s interior area because it will provide you and the passengers the perfect surface texture for walking and standing.

This finish is perfect for both exterior and interior portions of your boat. It has a sheen, but it is not too glossy. It is a fusion between a high gloss and a matte, which leads to a perfect finish that is suitable for any boat.

Tinted or Untinted

A tinted marine varnish has the capability of slightly altering the original color of your boat. It will most likely produce a more resonant tone that will complement the color of your boat’s wood. Usually, oil based marine varnishes have tints.

Basically, this form of marine varnish does not have any color to it. If you prefer to maintain your boat’s paint but you want to add some gloss and protection to it, you may opt for this variant. Typically, water based marine varnishes are untinted.

Oil Based Or Water Based

As mentioned above, oil based marine varnishes have a tint to them. It could be amber, golden, or a rich copper tone. As time passes by, rest assured that your boat’s tint will get more prosperous and more profound.

I like this type of marine varnish because it does not try to hide the wood grain of the boat. It actually aims to improve its texture, not cancel it out. It is also essential to take note that oil based marine varnishes are glossier if compared to water based marine varnishes.

Water based

This base has no color at all; it is transparent. It only provides gloss because it does not affect the original color of the boat. However, this has the tendency of flatting out the wood grain of a vessel.

Again, take note that even though water based marine varnishes are still quite glossy, it is still less glossy than oil based marine varnishes.

Marine varnish’s sole purpose is, in simpler terms, to protect the boat from aging. It can block the sun’s UV rays, which can slowly but surely deteriorate the wood’s quality and color.

Most marine varnishes in the market nowadays are effective in protecting the wood against harmful light. This will ensure the boat owner that their boat will maintain its quality for an extended period of time.

Aesthetically Pleasing

The varnish is used to enhance the wood’s appearance. It provides shine and evenness across the entire wood surfaces. It reduces the wood’s porosity by sealing each area; it penetrates the wood without damaging it. It also keeps tiny wood parts in place to avoid woodcut incidents.

Covers Micro Tears, Scratches, and Stains

Marine varnish can also serve as an additional cover over micro-tears, scratches, and stains. Even though your boat has some scratches, rest assured that a few coatings of the best boat varnish will thoroughly cover it up. Also, it is thick enough to resist minor physical damages.

Disadvantages

Slow Drying Time

Some, not all, marine varnishes tend to dry slowly. So instead of getting the job done within a day, you might have to work for 2 to 3 days just to finish all of the needed varnish layers.

Can Contain VOCs

Most marine varnishes nowadays contain Alkyd or Polyurethane synthetic products. Although they provide excellent results for applying and retaining the varnish onto boats, they produce high amounts of VOCs or volatile organic compounds.

VOCs are gases that Alkyd and Polyurethane emit into the air. It is associated with the formation of cancer within the human body. It also has the capacity to interact with other forms of gases, which could result in both short-term and long-term health issues.

Some other health issues that volatile organic compounds pose are the following:

• Irritation of eyes, nose, and throat
• Dizziness and headache
• Memory loss
• Visual impairment
• Sick building syndrome

Clean Before and After Sailing

As a rule of thumb, always clean your boat’s surfaces before and after sailing . Not only will it make sure that your varnish is well-kept and beautiful-looking, but it will also lengthen the life of your boat.

While cleaning, do your best to get rid of all sorts of grime and dirt. Check both the interior and exterior. It is also a smart choice to do a thorough cleaning at least once or every two weeks. Not only will it keep your boat hygienic, but it will also make your boat maintain its best shape.

Apply New Varnish If Needed

Yes, you have fully applied marine varnish on your boat’s surfaces. However, you need to check for the need to reapply every now and then. Keep in mind that it is always better to prevent damage rather than to repair it.

By doing a monthly check-up, your boat’s safety and elegance will always be assured. If you can see certain varnished spots that have thinned down, reapply several marine varnish coats onto that area to avoid the promotion of wood brittleness.

Where can I Buy a Marine Varnish?

There are a lot of different places where you can purchase a marine varnish. Here are some of the most common establishments where you can find the best marine varnish for your boat:

• Hardware stores
• Department stores
• Ship’s stores
• Marine stores

Can a Marine Varnish be used on a Deck?

Yes, you may use a marine varnish to enhance your deck’s beauty and UV protection. But make sure to choose a matte or satin marine varnish so that the deck would be safe to walk on. Avoid using high gloss marine varnishes because they will be too slippery to walk on and may result in unwanted accidents!

Does a Marine Varnish Effectively Waterproof a Wood?

In a way, it does provide a non-porous layer between the wood and the outer area. Think of marine varnish, especially polyurethane marine varnish, as a thin plastic that clings onto the wood. If you put in enough oceanic varnish layers, you will successfully get rid of any porous areas, directly waterproofing the wood.

In a nutshell, every boat owner has to have a little bit of knowledge on marine varnish because it is one of the most effective ways to preserve a boat’s health. With just one session of marine varnish application, their craft will be protected for a long time.

The marine varnish is essential to protect boats from getting older instantly. As much as possible, we have to do our best to take good care of them because, let’s face it; they cost quite a lot! This list of the best marine varnish of 2021 will surely give you some ideas about which varnish to purchase!

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Better Sailing

Best Marine Varnish for Boats

What is Marine Varnish? Marine varnish is a finish coating that protects the outer part of the wood. Specifically, in this instance, it protects the wooden parts of a boat from the sun, rain, wind, sea spray, ultraviolet rays, chemicals, and other extraneous factors. Therefore, a marine varnish must be applied to a boat’s outer wooden parts. Therefore, for one to gain the full advantage of marine varnish, he must choose a good marine varnish product to avoid unnecessary complications that would affect the structure of the boat’s wooden surfaces. In this article will discuss the best marine varnishes to help you make the right choice when purchasing a marine varnish product. 

Some Of The Best Marine Varnishes for Boats Are:

Epifanes Clear Varnish

The “Epifanes clear varnish” is well-rounded when it comes to all the features an exterior finish should have. It is composed of Ultraviolet rays filters like alkyd resins and phenolic that would protect the outer wooden parts properly from the effects of Ultraviolet rays. Due to its components, it is easily absorbed by wooden surfaces, and its effects are long-lasting, which makes it an ideal wood varnish. In other words, it gives off a durable rock solid result. It also has a glossy finish that improves the aesthetic value of any wooden surface. 

Application of the varnish can take days because of the process involved. However, another advantage of the “Epifanes Clear Varnish” is that it takes less time to apply than the typical marine varnish, and more than three methods can be used. In other words, this particular product is very effective when it comes to the longevity and durability of wooden structures. Link to Amazon .

>>Also Read: Best Antifouling Bottom Paint for Boats

Total Boat Lust Marine Varnish

A remarkable feature of this marine varnish is its high glossy look, improving the aesthetic value of any boat’s wooden surface. Generally, most marine varnishes change the color of the wood it is applied on by either making it a lighter or darker shade of brown, thereby altering the originality of the wood. The “Totalboat Lust Marine Varnish” improves the wood’s original color without taking from the original aesthetic. The varnish makes the original color of the boat bolder and gives it a fresher look. 

Also, because of the varnish’s nature, sandpaper is not needed to remove materials or scratches from the wood surface because the varnish aims to improve the wood’s natural texture. Like the “Epifanes Clear Varnish,” and unlike most marine varnishes, Total Boat Lust Marine Varnish doesn’t take much time to apply because it dries fast. It can also be applied between six to eight coatings which is not difficult compared to other varnishes. A day is sufficient. 

This product is available in two different forms: the matte finish and the high gloss finish. The matte finish improves the natural beauty of the wood, giving it a bolder outlook. In contrast, the high gloss finish improves the brightness of the woodwork. The varnish is also strengthened by UV stabilizers which means that the wooden surface will be protected from Ultra Violet rays from the sun. Link to Amazon .

TotalBoat Gleam Spar Varnish

As the name implies, the “TotalBoat Gleam Spar Varnish” can be applied to almost every wooden part of the boat. It can be used for the exterior and interior parts and even wooden furniture with the boat. An excellent feature of this varnish is its versatility. It is made up of tung oil, resins, and other stabilizers that prevent ultraviolet rays from affecting the wooden structure of the boat. It is highly resistant to sunlight and its effect.

Also, it is a very unique varnish that gives off a warm effect and has a very pleasant smell that lacks harshness when applied. 

It also improves the coloring of the wood by giving it a light amber effect which improves its beauty. In other words, the “TotalBoat Gleam Varnish” makes the wooden part of the boat look and smell nice. Another valuable feature of this varnish is that it is waterproof. The importance of a boat being waterproof cannot be over-emphasized because it improves the lifespan of the boat’s wood (like a wooden deck) and prevents decay etc.

In terms of application, it can be applied in several ways. For instance, it can be applied using a brush, a roller, a spray gun, etc. This varnish comes in two forms: the gloss and satin finish. The gloss finish varnish is the preferred option for the outside wooden part of the boat because of its properties. It gives the boat depth and makes it look more solid when applied. Also, the satin varnish improves the texture of the wood, so it is great for interior woodwork. Link to Amazon .

>>Also Read: Best Non-Skid Boat Deck Paints

Pettit Captain’s Varnish

Unlike the other recent varnishes, the “Pettit Captain’s Varnish” is an old brand that has been on the market for over 5(five) decades. The beauty of this product is that the new version is always better than the last. In other words, the “Pettit Captain’s Varnish” is a legendary brand that has been greatly improved over the years. As a result, it is the “experienced boater’s choice”. It has a glossy look that improves the boat’s natural beauty and gives it a bold and deep feature when applied.

It is a very durable varnish that lasts long and has been tested and recommended by boaters for decades. Also, the varnish provides UV protection on the wooden surfaces from UV rays’ effects. Like the “TotalBoat Gleam Varnish,” the Pettite’s varnish can be applied inside and out. In addition, the varnish can protect the boat from harsh weather conditions when applied properly.

As for the properties of the varnish, it is a water-based, marine-grade polyurethane gloss varnish that gives a smooth, elegant effect after it has been applied to any wooden surface of your boat. Another added advantage of this varnish is that it is eco-friendly. Most varnishes affect the environment because of their chemical elements. Also, they can impact the health of the boaters in the long run. However, this varnish is all-natural and eco-friendly, and this feature makes it stand out from the other varnishes.  Link to Amazon .

McCloskey/Valspar Spar Varnish

In a saltwater environment, the smell of the surroundings can get attached to your boat, giving it the “smell of the sea.” Although most of the time it’s nice, it can be very unpleasant sometimes. That is where the key feature of the “McCloskey/Valspar Spar Varnish” comes into effect. The varnish is resistant to water, salty air, and the smell of it. It also has a very durable finish that can last for a very long time. Also, it protects the boat from the effects of sunlight because of the UV protection present in the finish. 

It improves the wood color significantly, especially if it is an old wooden boat. If applied carefully, it can be used to hide the age of a boat, especially if the color of the wood has an old look to it. Also, it can be used for interior furniture to improve its natural beauty. It can be applied with different techniques, ranging from a brush to a roller. 

Another valuable feature of the “McCloskey/Valspar Spar Varnish” is that it is very resistant to the harsh weather environment that usually affects boats generally. Although this product is very effective, it is not advised to be applied to decks. The main reason is that it has a slippery feel to it when it’s wet, which can be very dangerous in certain circumstances. Apart from this setback, it is a very effective varnish. Link to Amazon .

>>Also Read: Painting Gelcoat: How To

Rust-Oleum 250141H Ultimate Spar

The key selling feature of the “Rust-Oleum 250141H Ultimate Spar Varnish” is that it is resistant to so many factors that can possibly affect boats in general. For instance, it is resistant to mildew, scratches, damage from UV rays, and harsh weather conditions because of its durability. It not only improves the beauty of the wooden part of the boat but is also a very effective protective coating. 

The durability of the “Rust-Oleum 250141H Ultimate Spar Varnish” is outstanding compared to other varnishes. It can also be used in the interior parts of the boat in places like doors, interior floorboards, etc. It can also be cleaned frequently with soaps and detergents. The “Rust-Oleum 250141H Ultimate Spar Varnish” has three finish options: satin, gloss, and semi-gloss, which is unique because you can use any depending on your taste and what you want.

Also, most marine varnishes rarely have above 2 finishes. This clearly differentiates the “Rust-Oleum 250141H Ultimate Spar Varnish” from other varnishes.  Link to Amazon .

>>Also Read: Best Boat Hull Cleaners

Best Marine Varnish for Boats – Final Thoughts

The best marine varnishes listed above should be on your purchase list when you are looking for a marine varnish that would protect, enhance the overall effectiveness and improve upon the aesthetic value of your boat.

Peter is the editor of Better Sailing. He has sailed for countless hours and has maintained his own boats and sailboats for years. After years of trial and error, he decided to start this website to share the knowledge.

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Top 7 Best Marine Varnish for Wood (Reviews & Buying Guide 2022)

Varnishing wood is the commonest way of revitalizing old wood. Many people varnish their cabinets and countertops to offer additional protection and add a glossy finish to them. A nicely varnished wood or piece of furniture is attractive and a beautiful sight to behold.

But, choosing the best marine varnish for wood is one hell of a tough task. Many people get confused as to which product is the varnish or not. I’ll be reviewing the best marine varnish for wood and what you need to know before selecting the right product and how to apply the varnish perfectly. First, what’s a marine varnish?

Choose from our top 3 Picks

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What Is Marine Varnish?

The marine varnish is a formula that acts as a protective film against wear and chipping. It’s specifically designed for wood exposed to water. Before now, varnishes comprised resin and pine sap. Now, varnishes feature simpler chemical ingredients like Tung oil, phenolic, and alkyd resin, making painting much easier.

One significant thing that differentiates the varnish from paints is the color. Unlike paints, the varnish isn’t colored. Plus, you can’t use paints for marine wood because the water will wash it away.

Marine varnishes provide sturdier finishes and can withstand water and bad weather conditions excellently. It has good coverage and offers more protection to the wood, prolonging its lifespan.

Reviews of the Best Marine Varnish for Wood

1. totalboat lust matte finish marine varnish – best overall marine varnish.

TotalBoat Lust Matte Finish Marine Varnish is an incredible marine varnish that will keep your piece of furniture and boats glowing and beautiful. This high-grade varnish is super durable and ideal for coating interior and exterior wood projects.

The premium finish is resistant to scratches, and won’t peel or wear away. The finish remains the same, whether the wood contracts or not. The temperature changes won’t affect the appearance or the lifespan of the varnish.

This marine varnish delivers a rich, and amber finish on your wooden pieces, and enhances their appearance. The finish is UV resistant, which is why you can use it on exterior projects. Thanks to its waterproof feature, water splashes have no effect on the finish.

One of the best features of this marine varnish is its drying time. The finish dries super-fast and permits rapid coating. You can apply this finish multiple times without sanding in between until the final finish.

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In addition to its fast-drying formula, the varnish is easy to use and relatively thick. Using a brush or roller, this varnish cures into a lustrous and yellow finish that you would adore.

• It’s durable
• UV protected
• Super easy to apply
• Great for indoor and outdoor use
• Weather-resistant
• Includes a fast-drying formula
• Cures into a beautiful finish
• The amber coloring doesn’t sit well with many people.

Aside from its amber coloring, TotalBoat Lust Matte Finish Marine Varnish is arguably the best marine varnish available. It’s thick, straightforward to use, and suits various indoor and outdoor projects.

2. Rust-Oleum 207008 Marine Varnish – Best Durable Marine Varnish

Rust-Oleum Marine Varnish will add natural beauty to the wood and deliver a crystal-clear finish. Although it’s an oil-based formula, the amber color will darken over time, leaving you with a more superior finish.

This spar varnish works well even in the harshest weather conditions, thanks to its UV and weather-resistant features. The formula is formulated to provide the wood with optimal protection against chemicals, sunlight, and water splashes. Due to how flexible the varnish is, it can expand and contract as the weather changes, maintaining its clear and superior finish.

The varnish is also durable. It’s tough and resistant to scratches, mildew, and stains. This makes it a perfect option for coating boats and outdoor wood pieces of furniture that are constantly exposed to water.

The oil-based formula is easy to use if you follow the manufacturer’s instructions. You don’t need to thin the formula before applying it because its liquid nature. For best results, apply with a China bristle brush and a fresh foam paintbrush.

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Rust-Oleum dries rapidly and has a wide coverage when applied. After coating, the varnish dries under two hours into a beautiful and glossy finish.

• Produces a clear and great finish
• Easy to use
• Requires no thinning
• Dried quickly
• Excellent for exterior use
• Resistant to temperature and sunlight
• Good value for money
• Not suitable for indoor use.

This varnish is an incredible formula that will protect your wood adequately from water and other weather elements. Its durability is topnotch and the price is also affordable.

3. Epifanes Clear Varnish – Best UV-Resistant Marine Varnish

When it comes to making a durable and clear marine varnish, the Epifanes is one brand you can rely on. And this Clear Varnish is no different from other lines of products the brand produced.

What makes this product stand out from others is the extra UV filters that it comes with. The filters offer additional protection to the wood compared to other varnishes. With this, you can coat your boats and wood furniture in the sun for long hours without problems.

Unlike some marine varnishes, this product doesn’t change the appearance of your projects. Rather, it enhances the surface’s appearance by creating a beautiful brown/amber finish. This color effect is super glossy and quite clear.

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Apart from creating a superior amber and glossy finish, this product is also durable and has a wide range of applications. You can use the varnish on household furniture and for outdoor projects. The varnish accepts various methods of application, such as brushing, rolling, and spraying.

• Leaves a clear, amber, and glossy finish
• Contains extra UV filters for added protection
• Suits different methods of application
• Great for interior and exterior use.
• Sanding between coats is required.
• Creates bubbles if not applied properly.

Epifanes Clear Varnish is the right product for you if looking for a product for both interior and outdoor use. It’s easy to use, as you can use any method of application.

4. TotalBoat Lust High Gloss Marine Varnish

This is another high-quality marine varnish from TotalBoat that will create a deep, rich, amber finish when applied to your wood project.

This marine-grade product enhances the overall look of the grain. It adds a natural beauty that you would love. The varnish is highly durable and comes with sun absorbers to prevent the sun rays from damaging the coats.

Thanks to the varnish’s durability, the coats would neither fade, peel or crack due to temperature changes. The varnish contracts and expands, maintaining the finish and appearance of the wood.

This varnish also creates a waterproof finish. It contains certain ingredients that make it highly resistant to water. This makes it ideal for coating furniture, boats, and all marine applications.

TotalBoat Lust High Gloss Marine Varnish also has a fast-drying formula. Once applied, the first coat dries within an hour. The varnish also allows for multiple coating, and the best thing about it is that you don’t need to sand until the final coat. You can coat your boat and other pieces of furniture in a day, which is great.

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In addition to its fast-drying formula, this product cures into a hard, smooth, superior, and glossy finish. The finish is super-clear, even though it’s an amber finish.

• Creates a superior and beautiful finish
• Easy to apply
• Extremely durable
• Offers optimal protection against water and weather elements
• Resistant to fade and scratches
• Requires a few sanding in between coats
• It’s too thick.

This varnish produces a great finish. It holds up well and requires less sanding in between coats, unlike some conventional varnishes. Although you may need to thin the product as it’s too thick.

5. Epifanes Wood Finish Matte

One thing I love about this varnish is its satin sheen finish. It leaves your boat and other wood furniture with an adorable effect when used.

Thanks to its components such as phenolic-modified alkyd resin and tung oil, this varnish dries into an amber, clear, and elegant finish. Best of all, you don’t need to recoat the wood surface after using this product for a long time. The finish is long-lasting, which is impressive.

Epifanes Wood Finish Matte is super durable, as it offers maximum protection against fade, wears, and scratches. It also comes with UV absorbers that protect the wood from the effects of the sun. This means you can coat your piece of furniture or boat in the sun without side effects.

This finish is easy to apply, and you don’t need to sand in between coats due to its low porosity level. Because of this, the varnish brings out the best finish in the wood while concealing its awkward appearance.

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This product is thick, so you’ll need to thin it with mineral spirit before application. For the best finish, apply with a brush.

• Great for outdoor use
• Sanding between coats is unnecessary.
• Creates a satin and smooth finish
• Highly durable
• Contains UV absorbers
• You will need to be fast with the application, as it dries quickly.

For those who prefer a matte, satin finish, I recommend the Epifanes Clear Varnish. It’s UV protected, resistant to fade, and dries quickly into an adorable finish.

Read Also: Best Water Based Polyurethane for Furniture (Reviews & Buying Guide 2021)

6. McCloskey 6539 Man O’ War Marine Spar Varnish Gloss – Best for Interior and Exterior Use

If you want a durable product that you can use for both interior and exterior wood projects, then the McCloskey Marine Spar Varnish is for you.

This marine spar varnish is extremely durable. When dried, scratches and others have minimal effect on it. Best of all, this marine varnish is UV and moisture-resistant. This marine varnish is suitable for boats, furniture, and other areas that are frequently exposed to water, as it will offer increased protection against ocean salt and peeling.

Bothered about temperature changes? With this marine spar varnish, you don’t need to. It expands and contracts according to temperature changes. This means the beautiful finish on the wood remains the same and unaffected.

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This product holds up well and quite convenient to use. You don’t need to apply many coats to get your desired finish. The product dries into a hard, long-lasting finish. However, it doesn’t dry as fast as one would expect.

• Holds up well
• Works well in any weather condition
• Resistant to sunlight
• Long-lasting finish
• Delivers a superior finish
• Straightforward to use
• Gives off an odd smell during use.

This is one of the best marine varnishes on the market that doesn’t cost much. Though it’s designed for marine applications, it’s great for coating indoor wood pieces of furniture. It’s not difficult to apply, as you don’t need to thin it.

7. System Three 1855S16 Clear Marine Spar Urethane Varnish Coating – Best Budget Marine Varnish

If you are looking for the best low-budget marine varnish, I recommend the System Three 1855S16 Clear Marine Spar Urethane Varnish. This varnish is fantastic, and one of the best there is. It cures properly into a satin and gloss finish.

This marine varnish is made for exterior use and offers optimal protection to the wood. The finish is durable, making the wood surface tough and resistant to scratches and weather elements.

Additionally, the marine varnish contains ultraviolet absorbers that prevent the sun rays from getting into the wood. This keeps the wood furniture or surface glowing even when exposed to sunlight. It’s also resistant to water, being that it’s a marine varnish.

For easy application, the System Three Clear Marine Varnish excels greatly. With a roller, brush, or HVLP sprayer, you can easily apply the varnish on doors, railings, etc. You don’t have to thin the varnish before using it unless for special coatings, which is fantastic.

In terms of drying, the finish doesn’t perform badly. It dries relatively fast, and the final finish appears smooth and super glossy. When thinned, a self-leveling finish is created, eliminating the chances of bubbles forming during application.

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I love the fact that the varnish is affordable. For buyers who are unwilling to spend much on a varnish, this product would be a perfect choice.

• Creates a fabulous finish
• Water-resistant
• Cures into a durable finish
• Resistant to scratches
• It doesn’t dry fast.
• Not great for interior use

System Three Marine Varnish is a low-budget, high-quality finish that will revitalize your old outdoor wood piece of furniture and make them look beautiful again. Its UV absorbers will prolong the wood’s lifespan by preventing the sun from penetrating the wood.

Best Marine Varnish for Wood Buyer’s Guide

When in the market for the best marine varnish for wood, there are essential factors that you must consider to ensure that you make no mistake. Below are some of these factors;

Types of a Marine Varnish

You will encounter several types of marine varnishes when in the market for one. Marine varnishes exist in the following types as Tung Oil mixture, Water-based and Oil-based Polyurethane, Exterior Varnish, Spar Varnish, Two-Part Varnish, and Acrylic Varnish.

As I earlier explained in this article, classic varnish comprised of resin and pine sap. Modern marine varnishes now comprise tung oil, phenolic resins, and alkyds.

Varnishes with tung oil offer gloss finishes and harden after application. This makes them great for coating boats and other things that come in contact with water.

Water-Based and Oil-Based Polyurethane is another type of varnish. They contain chemical components that harden quickly when applied to a surface. Unlike oil-based poly, water-based results in crystal clear finishes and doesn’t give off yellow color. However, it is not durable as oil-based poly.

Exterior Varnish is for exterior use. It comes with UV protection that makes the varnish suitable for outside utilization. This varnish makes it impossible for mold to grow in the wood because of its deep penetration.

Spar varnish is mostly used for coating boats since they come in contact with water constantly.

The two-part varnish is a finish that comes with a base and a hardener. These two components are mixed in the right combination to give the best coating result. Two-part finishes offer maximum abrasion resistance and dry super quickly.

Acrylic varnish dries quickly and non-toxic. Like Exterior Varnish, acrylic varnish comes with UV light protection, so you can use it both on the inside and outside.

The acrylic varnish is also clear after application. However, it has low penetrating power but it’s not corrosive or gives off a bad odor. This makes it safe for use.

Ease of Cleaning

You can’t be too careful with using varnishes, as they sometimes spill accidentally. That’s why you need a formula that’s easy to clean. You will find it more comfortable to clean such a formula when it spills during use.

The varnish should be utterly resistant to abrasion and scratches and last for an extended time. This will minimize expenses and save you money a great deal.

Ease of Use

Some varnishes are difficult to use, especially for those who are just starting. As a beginner, you should use a product that’s easy to apply. You should use a product that you can handle comfortably should mistakes occur during painting.

Drying and Curing Time

Every varnish has its drying and curing time. However, you should avoid those that take time to dry, as they can complicate your schedule. Plus, varnishes that take time to dry are susceptible to dust and debris accumulation, affecting the coating result.

Safety and Maintenance Tips When Using a Marine Varnish

Maintaining a marine varnish will make it last longer and maximize its effect. Therefore, you need to take care of it and ensure that it’s kept in a safe place.

Careless handling of a marine varnish can jeopardize your safety. Marine varnishes are flammable. Exposure to fire and direct heat will cause an explosion.

Before you can begin to apply a marine varnish, make sure the area is properly ventilated. Painting outdoors, especially in the morning is most preferred. Also, you must wear safety gear like gloves, goggles, and a respirator for optimal security.

Although some marine varnishes come with UV protection, direct sunlight can affect the drying process. So you should either paint in the morning or late in the afternoon to avoid fast drying.

How to Apply a Varnish

• Clean the surface and prepare the surface for the first coat.
• Rough the surface up with 80-grit sandpaper so that the coat can stick.
• Thin the first coat with white spirit for oily varnishes and water for water-based varnishes.
• Apply the first coat with a roller. You can also use a paintbrush.
• Make sure the coat is dried properly.
• If you can see some bubbles on the surface, sand it with 180-grit sandpaper or any other fine-grit sandpaper to smoothen.
• Apply the second coat. This time, don’t dilute it.
• Wait for it to dry.
• If you wish to apply the third coat, repeat the process from step 7

What is the difference between spar varnish and marine varnish?

Spar varnish, also known as spar urethane, and marine varnishes are nearly similar. Both protect the wood from water and moisture damage. The major difference between spar varnish and marine varnish is that spar varnish can be oil-based or water-based, while the marine varnish is mainly water-based.

Is marine varnish better than polyurethane?

It depends on the surface you intend to apply the finish. For doors and exterior surfaces, the marine varnish is best to use because of the chemical properties and moisture-resistant abilities. Polyurethane is best used for items inside the home or interior use.

What makes varnishes better for exterior use than polyurethane is due to its low toxicity. They are more flexible and offer better protection against extreme weather conditions.

How long does marine varnish last?

Marine varnish typically lasts for more than ten years, although pigments, temperature, and chemical agents may affect durability. For instance, exposure to direct sunlight can minimize its longevity.

What is the best exterior clear coat for wood?

The best exterior clear coat for wood is marine spar varnish. This finish contains primary ingredients such as linseed and alkyd resin to offer optimal protection to the wood.

Is marine varnish waterproof?

The marine varnish is waterproof. However, its waterproof features are lost when it is used in certain woods. Before you can begin coating, you have to ensure if the varnish’s components are compatible with the surface you intend to paint.

Conclusion – Best Marine Varnish for Wood

Purchasing the best marine for wood is non-negotiable. If you want your furniture or boat to last as long as possible, you need to use the ideal marine varnish.

The best marine varnish will protect your wood furniture and enhance its appearance by creating a glossy finish. With this type of finish, your furniture will last longer without fading or losing its lovely appearance.

This article has provided the best marine varnish for wood. With the comprehensive buyer’s guide, I’m pretty sure you won’t have issues choosing the most suitable finish.

Remember to use the right method application when using any of the varnishes, as it guarantees the finish’s outcome.

Important Reads:

• Top 7 Best Polyurethane for Table Top (Reviews & Buying Guide 2021)
• Best Finish For Pine Dining Table 2021| Finishing a Pine Table

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An Unvarnished Truth

Advertisement

Practical Sailor tested marine varnishes in some of the harshest conditions: 24 months under intense Florida sun. Here are the products that rose to the occasion.

Two-part varnishes (a resin base to which a hardener catalyst must be added prior to application) were the top performers after two years, according to Practical Sailor. (Photo: Mark Corke)

The respected newsletter Practical Sailor (PS) is often described as "Consumer Reports for boaters." Subscriber-funded, it doesn't carry advertising. Every month, PS publishes the results of its independent, long-term marine-product tests. Its recent marine coatings test impressed us, and with their blessing we're sharing their results with our BoatUS members.

Over a two-year period, PS tested 22 one-part varnishes, six two-part varnishes, 18 synthetics and satins/varnish alternatives, and eight teak oils and sealers, each one on a small panel of bare solid teak under the Florida sun. The test panels were checked every few months, and editors reported how the finishes held up at the one-year mark.

PS reports: "With the exception of a few two-part products, all the test coatings lost their sparkle at the two-year mark. The UV had sucked the life out of most of the coatings, particularly the clear finishes. Nevertheless, some performers were much stronger than others."

One-Part Varnish

In the real world, at the one-year mark, all of the one-part varnish and varnish-alternative test panels would be due for a maintenance coat. After two years, the one-part varnishes offering the most protection and a harder and more abrasion-resistant finish were Pettit's Z-Spar Captain's 2067, Detco Crystal (since discontinued), and Le Tonkinois Vernis. This extended protection came with trade-offs: Detco rated only "fair" for application, Le Tonk's gloss started to slip after one year, and Pettit's 2067 started losing its original color after 12 months. Boat owners in areas with less sunshine than PS's Florida test site should also consider Pettit's Flagship 2015 or Captain's 1015.

One hardware store varnish held its own: Minwax Helmsman Spar Urethane, costing half the price of many of the top-rated one-parts. It slacked in its color-retention ratings but had good multiseason durability.

If you opt for a one-part varnish, PS recommends an annual maintenance coat, whether it looks like it needs it or not.

Varnish Alternatives

None of the varnish alternatives performed well enough to earn PS's recommendation for full two-year wood protection, though Sikkens Cetol Marine and Sikkens Cetol Marine Light were notable. The opaque look may not appeal to everyone, but they were easy to apply, easy to maintain, and held their color for more than a year, a good reminder that higher-solids finishes tend to offer better UV protection. With modest maintenance (once a year scrubby pad and a fresh coat), the Cetol products with gloss overcoats proved to be the most durable of the varnish alternatives.

For areas where slippery-when-wet coatings won't do, PS recommends Cetol Natural (without gloss overcoat) or PS's top-pick teak oil, Star brite's Tropical Teak Sealer (classic teak). Star brite needs to be reapplied every three or four months.

Two-Part Varnishes

Impressively, it took two years for the top two-part varnishes to finally start showing their age. Best performers were Interlux Perfection (now called Perfection Plus) and Nautiking Nautithane, both offering uncompromised protection and better-than-expected gloss after 24 months, according to PS: "Two-part varnishes may be a pain to apply — and should you go too long and let the coating fail, you'd better invest in a heat gun to get it off — but their wet, glossy look and durability is unmatched."

Practical Sailor's complete two-year test report can be found at The Best Marine Varnish: Exterior Wood Finish Tests page .

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Which Yacht Varnish Is Best For My Boat?

Yacht varnish is a specialized type of varnish that is often used on boats. It has several advantages over conventional varnish, which is why it is becoming more and more popular among boat owners. In this guide, we will discuss the benefits of yacht varnish. We will also answer some common questions about yacht varnish. So if you are interested in learning more about this topic, keep reading!

Yacht varnish is a type of varnish specifically designed for boats. It is typically made from a tougher resin that can withstand the harsh conditions that boats are exposed to, such as salt water and sunlight. Yacht varnish also often contains UV inhibitors to help protect the wood from fading and other damage caused by exposure to sunlight. Conventional varnishes are not as durable as yacht varnish and will not stand up to the same conditions. This makes them less suitable for use on boats. However, they can still be used for other applications, such as furniture or around the garden.

Which types of varnish to use on my boat?

Marine varnish can be divided into three different types, each with its own perfect uses. Yacht owners choose to use one or all of these types for better performance.

Tung Oil-based varnish 

Is the most popular type among yacht owners who take boat maintenance seriously. International Schooner or Goldspar Boat Varnish are both oil-based varnishes that coats the wood evenly leaving a smooth finish while requiring minimal preparation work before it can be applied. This only requires a couple of coats. Is advisable to lightly sand the surface between coats to achieve the highest quality glossy finish. The smooth, high gloss finish will protect teak parts from water stains and help to maintain their appearance over time! Its UV protection helps prevent mould growth too which is especially important in wetter climates. Oil-based varnish is easy to apply and can be repaired by sanding and re-oiling the wood, meaning it will last longer than other conventional varnishes. It's also easier to apply compared with water-based yacht varnish which requires no sanding or priming before application.

Water-based boat varnish

Often used on marine boats where there is not much exposure to agitation or rubbing, making oil-based varnish too heavy for use. This yacht varnish type tends to leave a thin, powdery residue that needs sanding down after drying but offers better penetration into the wood than its oil counterpart. Polyurethane boat varnish - is much more hard-wearing than oil or water-based yacht varnishes. Stronger than oil-based or water-based yacht varnish, polyurethane yacht varnish tends to dry quickly and offers an ultra-hard surface that is resistant to impact, scratching and denting. This yacht varnish type has a high gloss tough finish so it's best suited for areas of the boat that are exposed to more wear and tear. This type of varnish can also be divided into two categories as one part polyurethane boat varnish and two-part polyurethane varnish.

One Part Polyurethane Varnish

The yacht varnish that is most commonly used for yacht paint jobs. The yacht varnish offers a quick drying time and can be easily re-coated within hours between each coat. It should be noted that due to its rigidity it is not recommended to be used for painting highly flexible wooden areas as it might crack in time leaving the wood exposed to elements. Two-Part Polyurethane Varnish - is the varnish with longer working times, making it easier to apply on larger boats. It's advisable to use only one part polyurethane yacht varnish for smaller projects as two-part yacht varnishes tend to leave an unprofessional finish when applied by hand. This type of varnish is extremely tough and consists of two products mixed together. It offers very good protection from moisture and UV damage but the same as the above this is not suitable for some areas on your yacht (such as spars) and it will crack as the wood moves and will leave the wood exposed to the elements.

Is yacht varnish waterproof?

Yes, yacht varnish is typically waterproof. This makes it a good choice for protecting boats from the elements. It can also help to keep the wood of the boat looking its best for longer.

Does yacht vanishes need a primer?

No, yacht varnish does not typically need primer. However, it is a good idea to test it on a small area of the surface you are going to varnish to make sure it adheres properly. If you do decide to use primer, make sure it is designed for use with yacht varnish.

Does yacht varnish seal wood?

Yes, yacht varnish seals the wood. It forms a protective barrier that helps to keep the wood from damage and keeps it looking its best for longer.

How long does yacht varnish last?

The lifespan of yacht varnish varies depending on the brand and the conditions it is exposed to. However, it typically lasts for several years, anywhere from two to three years before you need to apply a new coat or two. Some varnishes obviously last longer than others depending on the area where they will be applied.

Which is better? Woodstain or yacht varnish?

There is no simple answer to this question as it depends on the specific application and the needs of the user. However, in general, yacht varnish is a better option for protecting wood from the elements and keeping it looking its best. It is also typically more durable than wood stain, which makes it a better choice for boats.

Why is it important to sand between coats?

It is important to sand between coats of yacht varnish because it helps to create a smooth, even surface. This makes the final coat of varnish look its best and helps to protect the wood from damage.

How many coats should I apply?

The number of coats you should apply depends on the specific product you are using and the area you are varnishing. In general, two to three coats are sufficient. However, it is always a good idea to follow the manufacturer's instructions for the best results.

What type of finish can you get?

There are three types of finish on boat varnish: gloss, semigloss, and satin. Each one has its own benefits and drawbacks, so it is important to choose the one that best suits your needs. Gloss finish is the most durable, but it is also the most reflective. This can make it difficult to see in bright sunlight. The semigloss finish is less reflective than gloss, but it is still quite durable. It is a good choice for areas that receive moderate amounts of sunlight. The satin finish is the least reflective and also the least durable. However, it can provide a more natural look to the wood. It is a good choice for areas that do not receive a lot of sunlight.

Can you paint yacht varnish over wood stain?

Yes, you can put yacht varnish over the wood stain. However, it is important to make sure that the stain is fully dry before applying the varnish. Otherwise, you may end up with a sticky mess.

How long does it take for yacht varnish to dry?

The drying time for yacht varnish varies depending on the brand and the conditions it is used in. In general, you can expect it to take anywhere from six to eight hours to fully dry. However, it is always a good idea to read the manufacturer's instructions for the best results.

Can you thin yacht varnish?

Yes, you can thin yacht varnish if it is too thick. However, you should only use a thinner that is specifically designed for use with yacht varnish. Otherwise, you may end up with a poor-quality finish.

What is the best way to remove yacht varnish?

The best way to remove yacht varnish depends on the type of finish you have. If you have a glossy finish, you can use a polishing compound. For a semigloss or satin finish, you can use sandpaper. In general, it is best to remove yacht varnish with a power sander. However, you can also remove it by hand if you are careful.

Can I apply a new coat over the existing varnish?

Yes, you can apply a new coat of varnish over the existing varnish. However, it is important to make sure that the old coat is in good condition. Otherwise, you may not get the desired results.

Does yacht varnish go yellow?

Yacht varnish is designed to keep your boat looking good as new even throughout the season's hottest and coldest temperatures. The UV inhibitors prevent yellowing, which can otherwise occur due to exposure to external factors like sunlight or rainwater on a dock; they also remain slightly soft so that it will not crack when expanding or contracting with changes throughout each year. Liquids such as engine oils may cause blistering if left unprotected by an anti-blister agent like silicone lubricant (which contains graphite).

Is yacht varnish oil or water-based?

Yacht varnish is typically oil-based. This makes it more durable and resistant to fading. However, water-based varnishes are also available. These are less durable but easier to apply.

So which yacht varnish is right for you?

Choosing the right yacht varnish depends on how much time you want to put into maintaining your boat as well as its location. We stock a wide range of varnish suitable for any type of wood on your vessel.

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What’s the Best Varnish for Your Yacht?

Looking for the  best yacht insurance ? Buy your  sailing yacht insurance  online at Admiral Marine, or contact our expert team for advice.

Varnishing your yacht is an essential part of its care and maintenance. The benefits are twofold: yacht varnish protects your boat from the elements, while also giving it a beautiful shiny finish. But with so many different yacht and marine varnishes to choose from, it can be difficult to know which one is best for your boat.

In this article, we’ll run through some of the most popular types of yacht varnish on the market to help you choose the right option.

What is Yacht Varnish?

Yacht varnish is an extremely durable solvent-based coating that is designed to protect the wood that yachts are made of and stop it decaying over time. Most varnishes are made up of a penetrating oil, resin and solvent. Although most yacht varnish is applied with a brush, it is possible to buy yacht varnish spray.

Different Types of Yacht Varnish Finish

There are many different types of finish to choose from, so you’ll need to know a little about them to decide which is the best yacht varnish for you.

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Yacht Varnish Brands

There are various brands that produce yacht varnish. Here are a couple of the most popular:

Screwfix Yacht Varnish

Screwfix is a retailer in the UK that sells a variety of products, including hardware and building supplies. They may carry different brands and types of yacht varnish. Yacht varnish provides resistance to water, UV rays, and other environmental elements. Yacht varnishes often contain additives to enhance their durability and performance in marine conditions.

Ronseal Yacht Varnish

A durable, long-lasting marine varnish for wood that flexes with the movement of the wood and resists peeling and cracking. This varnish is slightly more pricey than the Screwfix varnish, but gets great reviews. You can buy the Ronseal brand of yacht varnish in B&Q and other retailers.

How to Varnish Your Yacht

Varnishing a yacht is fairly straightforward, if a little time-consuming. First you’ll need to carefully sand down the entire surface that you want to varnish to get it looking smooth. Then use a soft brush to wipe off any excess dust and debris, since you don’t want it getting trapped in the varnish.

Finally, use a paintbrush to coat the yacht with varnish. Leave it to dry for the recommended amount of time on the tin, then apply additional coats as required. Always check the instructions of your varnish type, and if unsure consult with an expert before starting.

Yacht varnish is solvent-based and contains toxic chemicals, which means it should not be used for varnishing animal enclosures (for example, rabbit hutches or reptile enclosures).

• What is yacht varnish used for? Yacht varnish is used for sealing and protecting wood on boats and yachts. It is also commonly used for outdoor items such as wooden doors, window frames or pergolas.
• What type of varnish is yacht varnish? Yacht varnish is a solvent-based outdoor varnish that is extremely durable. It is usually made up of tung oil and polyurethane resin. 
• What is the best varnish to use on a boat? The type of varnish that is best for your boat will depend on the type of wood your boat is made from and the finish you are looking for. Tung oil varnish is a safe bet for most boats, or you may prefer to use a one-part polyurethane varnish for added durability.
• What is the difference between yacht varnish and outdoor varnish? In general, yacht varnish dries quicker and is designed for marine conditions, so it’s likely to be more durable than outdoor varnish. However, yacht varnish is unlikely to have an anti-slip formulation, making it unsuitable for decking around the home.

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TotalBoat Halcyon Marine Varnish | Water-Based Polyurethane Wood Finish | Clear Gloss UV Protection for Interior and Outdoor Use (Clear Amber, 4 Quart)

Purchase options and add-ons

Brand	TotalBoat
Material	Polyurethane (PU)
Finish Type	Gloss
Compatible Material	Wood
Coverage	80-100 sq. ft./quart

About this item

• DURABLE MARINE-GRADE VARNISH cures to a hard gloss or satin finish for beautiful brightwork; for interior and exterior use on wood trim, toerails, cockpits, doors, cabinets, chairs, outdoor furniture and more - on your boat or at home
• PROTECTS AGAINST DAMAGE FROM SUN AND WEATHER: Provides superior sun-blocking protection and maximum resistance to salt, abrasion and scratches; excellent adhesion and flexibility let wood expand & contract naturally, without cracking or peeling
• EASY TO APPLY, EASY TO CLEAN UP: Spar urethane is easy to apply by brushing, rolling or spraying; looks milky-white at first, but cures to a clear or clear amber color, depending on formula; for a satin finish, use gloss for build coats and satin for finish coat; easy soap & water cleanup
• FINISH VARNISH JOBS FASTER: Dries fast so you can finish faster than with traditional varnishes; apply up to 5 coats in a day, no sanding between coats; apply at least 2-4 heavy coats for interior applications; 4-6 coats for exterior applications
• CHOOSE FINISH AND COLOR: Gloss finish comes in Clear or Amber colors; Satin finish comes in Clear only; Kit Sizes: Pint, Quart and 4 Quart; Coverage: 40-50 sq ft/pint; 80-100 sq ft/quart; NOTE: Halcyon Satin is not available in a 4 Quart kit

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Product information, technical details.

Recommended Uses For Product	‎Interior, Exterior
Liquid Volume	‎4 Quarts
Item Form	‎Liquid
Global Trade Identification Number	‎00811932025234
Manufacturer	‎TotalBoat
UPC	‎811932025234
Part Number	‎520763
Item Weight	‎5.99 pounds
Package Dimensions	‎14 x 10 x 9 inches
Country of Origin	‎USA
Is Discontinued By Manufacturer	‎No
Size	‎4 Quart
Color	‎Clear Amber
Finish	‎Gloss
Item Package Quantity	‎1
Included Components	‎Varnish
Batteries Included?	‎No
Batteries Required?	‎No

Additional Information

ASIN	B08NTWL2NJ
Customer Reviews	4.6 out of 5 stars
Best Sellers Rank	#11,561 in Tools & Home Improvement ( ) #15 in
Date First Available	June 10, 2017

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Product Description

Once cured, it provides superior protection from sun damage, rainy weather, abrasion and scratches. Ideal for marine, indoor & outdoor furniture and trim. Eco-friendly ultra low VOC water based marine varnish limits exposure to harmful chemicals and makes soap and water cleanup easy. Unique resealable Pour Pak™ bag eliminates messy drips and prevents the skinning over & waste associated with metal cans. Compare to all waterbased finishes, oil modified, polycrylic and conventional urethane spar varnishes like McCloskley Man O War, Minwax Helmsman, Rustoleum, Varathane, Epifanes, General Finishes, Arm R Seal, System Three or Deft. All TotalBoat products are developed to provide great value and great results. 100% made in the USA.

Top Brand: TotalBoat

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	Halcyon Marine Varnish | Water-Based Polyurethane Wood Finish | Clear Gloss UV Protection for Interior and Outdoor Use (Clear Amber, 4 Quart)	Helmsman Water Based Spar Urethane, Quart, Gloss	qt 63333 Clear Polycrylic Water-Based Protective Finish Satin	1 gal 71033 Clear Premium Oil-Water Hybrid Water-Based Oil-Modified Polyurethane, Warm Satin	Aqua Coat Clear Lacquer in Gloss Finish - Premium Water-Based for Wood & Plastic - Fast-Drying, Non-Yellowing, Eco-Friendly - 1 Gallon, Self-CROS-Linking,	207008 Marine Spar Varnish, Quart, Gloss Clear
Price	$129.99$129.99	$28.78$28.78	$22.97$22.97	$50.00$50.00	$67.85$67.85	$19.98$19.98
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Customer Ratings	1,204	8,120	25,704	1,116	46	3,411
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Important information

Thinning not required, even for the first coat. However, to help create a desired flow, thin with water up to 20% maximum. Cleanup with soap and water. Application method: Brush, roll & tip, or spray. Application temperature: 50-90°F; 0-90% RH (relative humidity). Number of coats (minimum): 2-3. Accelerated application: Apply a maximum of 5 coats per day. Always wait 12 hours between applying Halcyon and sanding. Tack-free time to recoat: 1 hour at 72°F. Overcoat without sanding: Up to 12 hours. Coverage: 40-50 sq. ft./pint; 80-100 sq. ft./quart. Cured color: Halcyon (clear light amber); Halcyon Clear Gloss or Satin (ultra clear). Finish: Gloss or Satin. Gloss DOI (Distinctness of Image): >90% @ 60°; >77% @ 20°.

Customer reviews

• 5 star 4 star 3 star 2 star 1 star 5 star 79% 10% 4% 3% 4% 79%
• 5 star 4 star 3 star 2 star 1 star 4 star 79% 10% 4% 3% 4% 10%
• 5 star 4 star 3 star 2 star 1 star 3 star 79% 10% 4% 3% 4% 4%
• 5 star 4 star 3 star 2 star 1 star 2 star 79% 10% 4% 3% 4% 3%
• 5 star 4 star 3 star 2 star 1 star 1 star 79% 10% 4% 3% 4% 4%

Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.

To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.

Customers say

Customers like the ease of application, finish, and quality of the product. They mention it's easy to use, provides a very durable finish, dries quickly, and holds up well to both weather and abrasion.

AI-generated from the text of customer reviews

Customers find the application of the varnish easy. They mention it goes on smoothly, is convenient, and dries quickly. Some also say it's easy to pour and swiping puddles is easy.

"...squeegee nearby from my rookie mistake but this product makes swiping puddles easy .TUNG OIL- backstory- I applied two coats 5mo...." Read more

"...This product really is easy to work with , was ready for the second coat within an hour, and really does clean up with soap and water...." Read more

"...This product is easy to work with and easy cleanup. Highly recommend!" Read more

"... Sets fast so very little trash in the finish that is floating in the air. You can recoat in as little as 1 hour...." Read more

Customers like the finish of the product. They mention it's beautiful, clear, and smooth. Some say it'll level itself perfectly as it dries. Customers also appreciate the light amber tone that gives a nice warmth to even bare, unstained wood.

"...I will keep on hand for many reasons....it dries faster, beautifully , easy to work with, no headache causing fumes!..." Read more

"...A light sanding with 400, then 5 coats and it looks great . 5 coats took a little less than a quart on 12' bar. Waterproof, looks great, dried fast." Read more

"...The swing looks great and WAY BETTER than I imagined it would look when I first placed the swing in the garage at the start of the project...." Read more

"...So easy to apply. Easy to clean up and the finished product is beautiful !" Read more

Customers like the quality of the varnish. They say it's easy to use, works great, and drys strong and quickly. Some say it outperforms standard exterior lacquers.

" Stuff works great " Read more

"...The results are amazing and yes, I did 6 coats in one day with no sanding between...." Read more

"Easy to use, great result " Read more

"... this stuff is great . I got the gloss, but would like to try a more matte finish next time." Read more

Customers like the dries quickly of the household varnish. They mention it goes on easily, drier than expected, and smooths out as it drys. Some say it glides on and self-levels without brush marks.

"...It dries fast , but you have enough time to work with it...." Read more

"...Waterproof, looks great, dried fast ." Read more

"I like the product, goes on effortlessly. It dries fast so if your doing a large area you may want to use a good roller...." Read more

"...It glides on , self levels, no brush marks...." Read more

Customers like the durability of the varnish. They mention it provides a very durable finish, holds up well to both weather and abrasion, and is easy to apply and forgiving. Some say it feels like a legit piece of furniture. They also mention it has a great consistency and hardens up quickly for multiple coats.

"...It is a great consistency , and I only had to catch some runs in the corners. It dries fast, but you have enough time to work with it...." Read more

"...It self levels well and so far has stood up to mother nature ." Read more

"Easy to use and seems very durable . Love the packaging. Yellowed a fair bit after 3-4 months which kinda sucks." Read more

"...Still, this chiped, peeled . I did everything right for surface prep, tack cloth, isopropyl…..." Read more

Customers find the cleaning process of the varnish easy. They mention it's fast and the results are excellent.

"... Easy cleanup and can be used indoors as well...." Read more

"...was ready for the second coat within an hour, and really does clean up with soap and water ...." Read more

"...This product is easy to work with and easy cleanup . Highly recommend!" Read more

"...The cleanup process was very simple - my brush was easily cleaned with water (no soap needed)...." Read more

Customers like the weather protection of the varnish. They mention it's easy to apply, provides great protection from the elements, and cleans up with soap and water. Some say it'll be a big hit and is worth it for maximum protection and durable finish.

"...Perfect. My planter looks outstanding and is protected from the weather and hopefully from rotting out too soon. Easy cleanup with water...." Read more

" Very good protection for wooden rails from rain" Read more

"... It protects everything so we don't have to repaint yearly and is giving it years more of life. We love it!!!!" Read more

"...It is so easy to apply, give great protection from the elements and cleans up with soap and water. Highly recommend." Read more

Customers have mixed opinions about the color change of the varnish. Some mention it's a good product that doesn't yellow, while others say it needs UV protection because epoxy yellows in the sun. The brown color gets worse the thicker the material gets, and turns their purple hearts dirty gray.

"...They are yellowing significantly . I had to pull a few of my sculptures to sand and repaint because of this...." Read more

"Poured out thick. did nor produce a blue tint and was easy to clean up...." Read more

"Easy to use and seems very durable. Love the packaging. Yellowed a fair bit after 3-4 months which kinda sucks." Read more

"...It needs uv protection bc epoxy yellows in the sun .I sanded below 220 after the first 2 layers peeled offer...." Read more

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• Boat Maintenance

Topside Paint Test Kicks Off with a Look at Application and Gloss, Tips and Techniques

Practical sailor rates dozens of enamel, one-part urethane, and two-part urethane paints..

All that glitters isn’t gold, and as the price of professional topside makeovers continues to climb, many do-it-yourselfers are looking to other alternatives.

A gleaming paint job remains an icon of yacht-quality maintenance, and paint makers spin the transformative ability of what comes in their cans. The good news is that there’s still some truth in advertising. After a close look at the latest paint systems, Practical Sailor testers offer a report on just how user-friendly topside paints have become.

A few decades ago, an aircraft paint company executive decided to paint his boat with the same stuff used to coat aircraft that flew at 450 knots—the stuff that seemed immune to UV degradation and shed hydraulic fluid like water off a duck’s back. The results were more than impressive, and his experiment with a paint called Alumagrip led to a marine-coatings revolution and the birth of Awlgrip.

With the new brand came a new coating process that featured an epoxy primer and a sprayed linear-polyurethane topcoat. Today, Awlgrip has expanded its line to both polyester and acrylic-modified polyurethane top coats. The paint has become the gold standard among pros, but it’s occasionally used by amateurs.

Paint companies have responded to the demand for do-it-yourself (DIY) glossy finishes, and a plethora of single-part modified alkyd enamels, mono-urethanes, and two-part products line chandlery shelves.

In the same vein as our bottom paint and wood coatings tests, this topside paint evaluation begins with a report on application, handling, coverage, and initial gloss. After some field testing, we’ll rate each paint’s hardness, gloss retention, and long-term durability. Our last long-term look at these products was launched in the Feb. 15, 2002 issue and closed with a final report in the May 2006 issue.

What We Tested

We applied 29 topside paints from nine manufacturers to fiberglass panels. With such a large test field, we opted to divide the products by paint type. Of the test paints, seven are alkyd enamels; 12 are one-part urethanes; and eight are two-part linear polyurethane. We’ve classified two as “other” as they fit into none of the categories.

• Enamels: We found that choosing the right topside paint for the job at hand is based both on paint characteristics and applicator skill. At the easiest-to-apply end of the spectrum are traditional alkyd enamels, paints that are relatively soft, easy to sand, and almost creamy in brushability.

In the days of carvel-planked and clinker-built wooden boats, an annual coat of topside paint was part of the spring commissioning routine. The softer enamels delivered a season of shine, oxidizing a little over winter, and by spring, they were ready for a light-scuff sanding and a rejuvenating coat of alkyd enamel. Products like Pettit’s Z-Spar 100 and semi-gloss 101 and Interlux Premium Yacht Enamel were hard to keep on the shelf.

Today, there’s still an “enamel” demand, and products like Sherwin-Williams 1000, Kirby’s Hull and Deck enamel, and Z-Spar 1195 have been added to the fray. These paints excel in their ability to be easily applied. They are reduced with mineral spirit-based solvents and are soft enough for easy sanding between coats. However, the long-term gloss retention and adhesion of enamel is not as good as that of the higher-tech paints that have cornered the market.

• One-parts: In the middle range of topside paint technology are one-part urethane modified enamels. These are harder, glossier, and tougher coatings than alkyd enamels. They exhibit traits more akin to two-part systems, yet handle with almost as much ease as a traditional enamel. They are faster-drying, quicker-to-skin paints, and must be carefully thinned with specific reducers to retain good flow characteristics. A major benefit of these paints is their forgiveness on vertical surfaces where “hangs and sags” are just waiting to happen. Single-part urethane enamels offer multi-year shine, and on a couple of applications we have been field testing, the paint has weathered four years as a nonskid surface in a cockpit sole (Interlux Brightside).

• Two-parts: At the high end of the topside paint spectrum—in cost, durability, and gloss—are the two-part linear polyurethane (LPU) products that use an isocyanate catalyst to cure the paint. More a plastic resin than an old-fashion enamel, these “wonder coatings” typically afford a wet look that packs automotive showroom brilliance. The downside of this reflective quality is the need for smooth, even, dust-free application, and the extra effort associated with surface preparation.

All of the two-part products we tested produced superior results but also proved to be more difficult to handle than one-part products. One factor common to all of the two-part paints is the detailed prep work required, but testers found that it does pay off in the long run.

What We Found

• Enamels: Don’t sideline traditional alkyd enamels. They are easy to handle, require less exacting preparation, and are a pure pleasure to brush on. When used in low-abrasion situations where modest gloss is an asset, they can prove to be just the right paint.

Pettit’s Z-Spar No. 1195 Grand Banks Beige stole the show with its smooth, even flow and Excellent coverage. Other oil-based alkyds in the Z-Spar line (Nos. 99 and 100) featured the same remarkable handling quality that makes it a favorite among carvel and clinker-built wooden boat owners.

Both Kirby’s Hull and Deck Enamel gloss white and semi-gloss proved easy to handle and developed a smooth, even skin. The only disappointment was the streaky nature of its medium-gray enamel. Even after re-stirring, it required three coats to develop a smooth hue. The difference highlights the fact that even though one manufacturer makes multiple colors of paint, one color may not have the same gloss or application qualities as another color.

Sherwin-Williams’ Seaguard 1000 was another smooth-flowing, user-friendly, oil-based alkyd enamel. It spread evenly on vertical surfaces and was reluctant to hang or sag.

Bottom Line: Most of the enamels we tested performed well, comparatively. Our top picks so far for application and initial gloss are the Z-Spar Solid Coat No. 99 and Marine Enamel No. 1195.

• Single-part urethane enamels: By far, DIY topside paint technology has grown the most in the one-part urethane modified enamels sector, a best-of-both-worlds formulation that boasts of shine and longevity. Almost as user-friendly as an alkyd enamel and with almost as much gloss as the two-part paints, these hybrids certainly live up to expectations.

In a near photo finish in our application testing, Interlux’s Toplac and Epifanes’ Mono-urethane crossed the line in a dead heat with Insignia’s Resilience rounding out the winners’ circle. (Resilience is branded as a “for pro application-only paint.”) Snapping at their heels were Interlux Brightside, Pettit Easypoxy, and West Marine’s SeaGloss Pro. Two of the most popular colors on the nautical pallet have been Interlux’s Kingston Gray and Hatteras Off White.

Bottom Line: This was a close race, but the very slight edge for application goes to Interlux’s Toplac.

• Two-part paints: When it comes to surface toughness, bright gloss, and maximum longevity, two-part paints stand alone. Paint in name only, these acrylic and polyester modified-urethane resins have the ability to suspend pigment in a flat, highly reflective skin. The trick lies in applying the coating evenly and just thick enough for it to flow, making brush strokes or orange peel disappear.

As with all forms of juggling, a minor slip can spell major problems. Consequently for DIY interest, we looked carefully for paints that behaved well when rolled and brushed. Once again, Interlux and Epifanes crossed the line in a dead heat: Interlux’s Perfection and Epifanes’ Polyurethane products flowed smoothly over horizontal and vertical surfaces and resisted the tendency to hang or sag.

Fabula Inc.’s Signature Finish, which comes with brushes, rollers, tape, mixing graduates, stirrers, and detailed instructions also hit the mark. Sherwin-Williams’s vivid red two-part was the smoothest flowing red of the three we tested. Insignia’s Brilliance, like Awlgrip is a “pro only” recommended product, and once the right amount of brushing reducer was added to cope with the warm weather, these products also ranked as standouts.

The volatility of the solvents in all these two-part system leaves the user with less time to muck around, and maintaining a wet edge is essential to the “cutting in” process. Each manufacturer provides a “slow” brushing reducer that has to be carefully used. Too much causes excess flow—and the drama mentioned earlier of hangs and sags. In short, two-part paints typically provide the best gloss and toughest, longest-lasting finish, but they are the hardest to handle.

Bottom Line: The Awlgrip, Epifanes, and Interlux two-parts were the only products to earn across-the-board Excellent ratings.

• Other: As soon as we popped the lid on the first can of CrystaLac Crab Coat, we noticed change in the air. Absent was the aroma of oil or the volatile solvent jolt of urethane-based chemistry. In fact, the smell was imperceptible, and that made this paint especially appealing for those working inside a shop or below deck.

Crab Coat is not a water-based paint, but it is hydrophilic enough to allow water-only cleanup. It handles more like a blend between thick, creamy enamel and a water-based Latex. However, this paint is meant for exterior marine use. Time and our test panels will spell out how it weathers the environmental onslaught. It brushed on smoothly, but its Mystic Green color presented a somewhat streaky appearance.

Bottom Line: Though not as glossy as the current crop of urethanes, the Crab Coat produces a very appealing semi-gloss finish.

Topside and deck painting are labor-intensive undertakings that can rejuvenate an aging vessel as well as protect the substrate that lies beneath. Those enamored by the finish of the dark-blue Hinckley and Morris fleets have a tall order to meet.

Those willing to stay with white or a light color who are ready to invest equal amounts of time, patience, and skill, can parlay the cost of materials into a durable and attractive finish.

To say that the average roll-and-tip finish is just as good as a pro-sprayed finish would evoke too much of the Pinocchio factor. The results attainable by the average applicator can be quite good, but to hit the bull’s eye takes a steady hand, or the willingness to follow an autobody shop approach one of the paint manufacturers recommends.

One paint maker, Signature Finish, offers three sets of instructions, allowing DIYers to choose the level that suits them. Level 1 is straightforward: Apply three coats of their two-part paint (no primer), scuff sand between coats, and accept the last coat as the done deal. A Level 2 finish involves buffing with 3M Super Duty rubbing compound, and for those with more vigor and higher standards, there’s an exacting Level 3: Apply three or more coats, and once it’s dry (three to five days), wetsand it down to 1,200 or 2,000 grit followed up with the machine-buffing process. The workable acrylic LPU paint is highly buffable, and the result is a smooth, glossy surface, but care must be taken not to remove too much material.

Before committing to a big project, do a bit of testing of your own. A good test is to paint a pair of dinghy oars with good-quality enamel, then paint the inside of the dinghy with a one-part urethane, and finally flip it over, and go through a full prep-and-prime process that leads up to a roll-and-tip application of a two-part LPU paint. From this experience, you’ll have developed important painting skills and better understand the task that lays ahead.

All of the products we tested ranked at least acceptable in handlability, and many excelled. Only time will answer questions about durability and gloss retention.

Regardless of the paint you choose, be sure to review all of the manufacturer’s printed and online technical information, follow all safety procedures, and keep in mind that when it comes to painting, success is in the eye of the paint-brush holder.

• How We Tested
• Practical Sailor Value Guide: Topside Paints Application
• DIY Notebook

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