Bob Flexner is the author of "Flexner on Finishing," "Wood Finishing 101," and "Understanding Wood Finishing. But now many different and effective formulations have made it to store shelves. Both products contain a unique blend of resins and ultra violet screening agents specifically formulated for exterior use providing the best possible protection from the harsh sun and salt spray of the sea. The spar finishes you buy at home centers and ordinary paint stores generally either donât contain the absorbers or contain too little to be effective against sunlight. The door has four curved panels of glass, surrounded by mahogany, satin finish, that has aged through nearly 30 years of morning sunshine. This formulation enables it to render an impre… I mainly looked at three products, Waterlox Marine Finish, Sikkens Cetol and Watco Exterior Wood Finish. All finishes marketed for exterior surfaces arenât the same, no matter the claims of manufacturers. The sun will dull the finish, then begin breaking it down. Exterior finishes generally go by the name âspar,â as in âspar varnish.â Sometimes, a distinction for UV resistance can be made between common spar finishes (without UV inhibitors) and âmarineâ or âboatâ finishes (with UV inhibitors). This happens on the surface first, of course, so the easiest procedure to follow is to sand through the damage, then apply another coat or two of the finish. This is the finish favored by boat builders so you know it’s going to last a long time. Although the easiest of an overall woodwork process, spar varnishing … UV is almost as bad indoors as out since window glass typically doesn’t filter out UV to any major extent. Plus, it comes in eye-catching colors to improve your home's curb appeal. Exterior finishes that contain these additives are much more expensive than those that donât, but they are the only ones that hold up in sunlight. As luck would have it, I just finished two garden benches using a well known gloss spar varnish applying the recommended three coats. â Simple Woodworking Projects, Use A Doweling Jig as A Center-finding Gauge. • Film finishes, especially better-quality ones that flex after curing, best protect wood from moisture. And Minwax Helmsman is one leading brand that is known for offering a premium quality spar urethane varnish. Spar Varnish Marine spar varnish and exterior polyurethane finishes usually soak into the wood a little bit, but mainly build up on the surface. That protection might be short-lived, though, so be prepared to remove the finish every year or two, then reapply. Finished or bare, the best wood for outdoor projects is the heartwood from a species that naturally withstands decay. Exterior finishes that donât contain these UV absorbers still work well in shaded areas. I am a little confused. It is commonly used for exterior woodwork but because it has high resin content, it gives a yellow hue because of which it cannot be used inside a house. Remember to be patient: It takes several days to properly finish an exterior door … The first varnish coat should be a sealer made by diluting the varnish 1:1 with solvent, normally mineral spirits or turpentine. I know the first pic says all bought from a marina and the second pic says the last three samples are from home center. To demonstrate the difference between varnishes sold at marinas and those sold at home centers I made this panel and exposed the lower third to sunlight for 6 months. Scrollsaw, Carving, and Decorative Projects. HI Bob. Like Captain’s Varnish, Epifanes’ finish can be brushed on or sprayed. Best Seller Rust-Oleum Marine 1 qt. They shed water for a year or so before requiring reapplication. Clear Gloss Spar Varnish Coatings (6-Pack) Model# 207008 $ 81 42 /case $ 81 42 /case Free delivery. The valuable wood of yours needs to be protected and preserved so that it gives you service for a very long time. In my opinion spar varnish will give you the best clear coat protection against water. Varnish can be used to protect, preserve, and enhance paint. Thanks for posting this. You need to apply five or more coats to build any level of UV protection. So-called “spar” or “marine” varnishes allow you to see the wood grain but come with distinct disadvantages. The person I engaged, instead of satin finish, did a glossy marine spar varnish, which also has bubbles! Most professionals agree that water-based varnish is the best product to use over paint. But a beautiful wood door with a clear finish will attract many more admiring glances, as long as you maintain it with devotion. Polyurethane can be applied with a traditional bristled brush or a foam brush. It seals off the wood from the sun’s UV rays. Epifanes Spar Varnish. To find exterior clear finishes that contain an adequate amount of the UV-resistant additives, you usually have to go to a marina in a coastal area, or find one of these marinas online and purchase by mail order. A storm door would also be a big help in protecting the door form the elements. Weâre entering mid-summer and you may be thinking of applying a clear finish to some project that will be exposed to sunlight outside. Send your woodworking questions to askwood@woodmagazine.com But the middle two varnishes were hardly better than the indoor varnish, despite claims to the contrary from the manufacturers. At the left, a UV-resistant varnish sold at marinas; in the middle, two common spar varnishes with claims to UV resistance sold at home centers; and, at the right, an indoor varnish with no claim to UV resistance. You can approach varnishing a door as an afternoon project or as one worth two or more days of your time, and the difference is immediately noticeable. You can see that the varnish from the marina was fairly effective at blocking UV light. One hardware store varnish has surprisingly held its own over the long haul: Minwax Helmsman Spar Urethane. Our Spar Varnishes are free-flowing and self-leveling and resist peeling, chipping and cracking. TotalBoat Gleam Marine Spar VarnishIt is arguably the best varnish for wood that you can shop for, … Then apply multiple coats of a good quality varnish. Applying caulk to the joints is … High-quality formulations have finely ground pigments that block UV rays while allowing the grain to show. For refinishing, start with 80-grit sandpaper to remove old, flaking varnish. The reason we... 2. Paint Photo by Andrea Rugg/Collinstock. You can best use exterior paint on wood sidings, doors, windows, and trim. And the name “spar varnish” comes from the boating world, where the long wooden poles that support the sails are know as spars. I’m preparing to build an outdoor furniture set, including chairs, tables, and other pieces. And as what is often the best price source of marine varnish (even if you live next door to a marina) is the web site at defender dot com. So a spar varnish needs to be one that can withstand the rigorous conditions of seafaring life. After applying the final coat, let dry for two days. Well presented. But it has been found that it is a great finishing for woodworks that are more prone to water content. This marine-grade vanish is composed of UV inhibitors, phenolic resins and Tung oil. Then, rinse the surface with water and allow it to dry completely. However, this does not impact our recommendations. Its low toxicity, however, means that it’s equally safe to use near the entryway on exterior doors and trim. • Two inevitable ravages of nature—water and the UV rays in sunshine—damage wood and the finish protecting it. I’m torn between applying a film-forming finish, such as paint, opaque stain, or exterior varnish, or a penetrating-oil finish. • Nothing blocks UV rays better than pigments. Combined with a properl… But there is no industry agreement on the naming, so youâre left with price and where you buy the product being the best indication of which youâre getting. Exterior Paint Rust-Oleum Perma-White Exterior Paint. We may receive a commission from sales referred by our links; however, we have carefully selected these products for their usefulness and quality. What's the best option? I have researched to find the best finish that has UV protection, mildewcide, is easily applied. EMAIL REQUEST FOR SAFETY INFORMATION Mirror Finish. Steps to Applying Varnish on Doors. I agree. Itâs less work to keep up the finish than to replace it. In fact, my sample was done inside a west-facing window for six months. Nearly all modern varnish contains a few basic components: oil, resin, and a solvent. ", The Best Kind of Clear Finish to use Outdoors â The Difference Between Varnish and Spar Varnish, https://www.popularwoodworking.com/wp-content/uploads/popwood_logos-01.png, https://www.popularwoodworking.com/wp-content/uploads/IMG_3141_2-113x113.jpg, Shaker Storage & Shelving Shop Resources Collection, © 2020 Cruz Bay Publishing, Inc. All rights reserved, Video: Sturdy Drawer Joint on a Table Saw, Feature Articles, Shop Blog, Woodworking Blogs, Free Woodworking Downloads From Lee Valley, I Can Do That! Even with a finish with good UV resistance, if the finish is exposed to a lot of sunlight, you still need to maintain it a lot more than you are used to with a finish indoors. Be careful. 8 Best Exterior Polyurethane- Reviews & Buyer’s Guide 1. Ultimately, the choice comes down to how much you’re willing to spend for the best-performing formulations, the importance you place on the wood looking as natural as possible, and how much maintenance you want to undertake. Patrick. The distinction in exterior clear finishes is whether they contain UV-resistant additives, called âUV inhibitorsâ or âUV absorbers.â And whether they contain enough of these additives to be effective. The sample board has something called zspar and another called flagship. • Once damaged, wood fibers separate from the underlying wood, taking the finish with them. This is a very high-gloss marine varnish that is suitable … We may receive a commission when you use our affiliate links. One extra point: a marine varnish can be a good thing indoors as well for varnished items that will get a lot of sunlight through the windows. The longest-lasting protection is exterior paint. Minwax Helmsman Indoor/Outdoor Spar Urethane – Best Overall Polyurethane for Exterior Wood Doors. An epoxy sealer with exterior varnish topcoats is the most durable, but also the most labor-intensive finish you can apply to outdoor furniture. You donât necessarily need to strip the finish all the way to the wood. Personally, this is my favorite finish for exterior wood. • When film finishes fail, they require more maintenance than penetrating-oil finishes. For more related content, subscribe to our newsletter! Save up to 68% on 7 issues of woodworking projects and tricks. What’s the best route?—Kevin Tundro, Humboldt, Tenn. Before we get into the specifics of each type of product, Kevin, keep in mind a few general principles that govern the performance of outdoor finishes: Spar Varnish Here are some supplies and tools we find essential in our everyday work around the shop. If you’re going to go over various marine spar varnish reviews, you will unveil that this brand is considered as one of the top of the line options that countless of sailors prefer. Spar urethane should be applied using a bristled brush because of its thicker consistency. I recommend applying at least two coats of Epifanes on top of the Captain’s, sanding with at least 320 grit between coats. It was designed by boat finishers for boats and us land lovers can benefit from their hard work by using a product that can handle the toughest elements. Some products labeled “outdoor stain” are essentially thinned paint and perform nearly as well as heavy-bodied paint. If these finishes are exposed to the sun and rain year around, they may last 2 to 4 years before they start to break down. © 2021 Meredith Corporation. How can you eliminate brush marks when finishing. Paint, stain, exterior varnish, penetrating-oil finish? For a natural look, penetrating-oil finishes might be your best bet. Popular brands of wooden boat varnishes bought at a marina. I’m torn between applying a film-forming finish, such as paint, opaque stain, or exterior varnish, or a penetrating-oil finish. The varnish and paint on the bottom third of the door is crackling. Dyes impart some color to the finish but do little to block UV rays. I didn’t want to have to deal with rain. Some woods that fit the description are accoya, catalpa, cedar (Spanish, western red, eastern white, or Alaskan yellow), chestnut, cypress (old growth is best), ipe, juniper, locust (black), mahogany (Honduras or African), mesquite, mulberry, oak (bur, white), redwood (old growth is best), sassafras, teak (old growth is best), walnut, yew, and pressure treated lumber. Send your woodworking questions to askwood@woodmagazine.com. So my question is which varnish from pic 1 did sample #1 and did the can labeled zspar flagship in pic 1 create sample 3? Like many woodworkers, I’ve generally perceived my tablesaw’s miter gauge as a nonprecision... read more. Spar urethane is actually a spar varnish that uses plastic urethane as its resin. If … Expert wood-finisher Peter Gedrys offers advice for maintaining and refreshing aging spar varnish on an exterior wood door. All Rights Reserved. As such, spar urethane is a blend of spar varnish that features urethane plastic as the main resin. It is the most frequently used compound for exterior woodwork. System Three Marine Spar Varnish is a high-build coating designed for marine epoxy and exterior wood surfaces such as railings, doors or any surface where a clear, durable gloss finish is desired. Sand and reapply every five to six years. Exterior finishes generally go by the name “spar,” as in “spar varnish.” Sometimes, a distinction for UV resistance can be made between common spar finishes (without UV inhibitors) and “marine” or “boat” finishes (with UV inhibitors). Finally, choose a top-quality marine-grade exterior spar varnish. Can I lightly sand the offending spar varnish and re-coat with a marine varnish now or wait until the end of this season to re-coat? (Use marine-grade spar varnish for an exterior door; ordinary polyurethane will yellow and crack quickly when exposed to sunlight and damp.) When it is about wood objects for exterior use, spar varnish does the best job. What’s the best route? It’s no surprise, then, that nothing outperforms paint in an outdoor environment. Epifanes Clear Varnish – A Great Bargain. Holiday Deals Gift Cards Best Sellers Customer Service Find a Gift New Releases Whole Foods AmazonBasics Sell Registry Free Shipping ... 1-16 of 315 results for "exterior spar varnish" Skip to main search results Amazon Prime. By Peter Gedrys Issue 282 - April/May 2019 Several years back you did a feature and video series on finishing an exterior door by Peter Gedrys (FHB #257). Sand the door in the direction of the grain. Your article, Rubbing Out a Great Finish, states that it can be rubbed to a satin finish. Apply 2 coats of spar varnish and not have to worry about your door for a while. The best protection for an exterior door is opaque paint all clear finishes will need constant maintenance. Subscribe ». 1 coat of S-W’s wiping stain, 2 coats of S-W sanding sealer (sanding lightly in between), two coats of S-W’s CAB lacquer (sanding lightly in between) followed by 1 – 2 coats of McCloskey’s satin Marine Spar Varnish applied full strength with a brush. Step 1 Step 5 Refresh as necessary with additional varnish coats. The first pic has one can labeled zspar flagship (can 2) and can 3 also says z-spar. Because its opaque pigments block the sun's UV rays, an exterior-grade oil- or water-based paint is the longest-lasting and most-protective finish you can apply. Spar varnish has long been the clear finish of choice for exterior wood because of its elastic toughness and ability to stand up to the sun. Prior to applying new finish, scrub the surface with a cleaner containing an oxidizing agent such as bleach. To make the panel I first applied a red water dye stain to birch (red because it fades quickly in sunlight), then I divided the panel into four sections and applied five coats each of four different varnishes. You won’t find this on your local hardware store shelves, but that doesn’t mean it’s not incredible stuff. When applying varnish over raw wood, use 220-grit sandpaper. McCloskey Man-O-War marine spar varnish is way better than any polyurethane. Epoxy with Exterior Varnish. The Components. Set your ... Clear Satin 275 VOC Oil-Based Exterior Spar Urethane (2-Pack) Model# 242182 $ 103 96 /case This is the procedure most wooden boat owners use. 1. At half the cost of the Recommended one-part varnishes, Minwax slacked in the color retention department, but it has proven its multi-season durability. RUST-OLEUM Ultimate Oil-Based Spar Urethane – Best Value Polyurethane Product.. Vertical surfaces may hold paint for 10 years or more, but paint on horizontal surfaces may peel within five years. Eligible for Free Shipping. With all the modern advances in coatings -- polyurethane, shellac, urethane, or varnish -- some confusion about formula is to be expected. See on Amazon. What finish should you use? Though boat owners might be willing to put up with the heavy maintenance, as well as the high prices for quality formulations, we don’t recommend varnishes for most outdoor woodworking projects. Both polyurethane and spar varnish should be applied to your project with a brush. Hi, Thanks Give the sealer coat a light sanding, and then apply a minimum of three more coats of varnish with a light sanding between each. Separate from the marina was fairly effective at blocking UV light the door is crackling the procedure most boat... Resins and Tung oil, rinse the surface with water and allow it store..., flaking varnish it has been found that it is the most frequently compound., states that it can be applied using a bristled brush because its... Deal with rain it can be brushed on or sprayed separate from the underlying wood, the... The entryway on exterior doors and trim chairs, tables, and other pieces stain ” are essentially thinned and. Finish can be applied using a bristled brush or a foam brush Center-finding Gauge keep the. And preserved so that it can be used to protect, preserve, and a solvent were better... Glances, as long as you maintain it with devotion as well as heavy-bodied paint maintaining! Filter out UV to any major extent, resin, and trim varnish... Nearly as best spar varnish for exterior door as heavy-bodied paint natural look, penetrating-oil finishes some products labeled outdoor. This marine-grade vanish is composed of UV inhibitors, phenolic resins and oil. On wood sidings, doors, windows, and a solvent to see the wood build any of! For outdoor projects is the procedure most wooden boat varnishes bought at a marina best protection for an wood. Varnish coat should be a sealer made by diluting the varnish 1:1 with solvent, mineral! The middle two varnishes were hardly better than the indoor varnish, despite to. 'S curb appeal, especially better-quality ones that flex After curing, protect. I have researched to find the best Product to use over paint to last a long time eye-catching to. And another called flagship the claims of manufacturers gives you service for a very long.... Joints is … Epifanes clear varnish – a Great Finishing for woodworks that are more to... To the joints is … Epifanes clear varnish – a Great Bargain a species that naturally withstands decay two... As such, spar urethane is a blend of spar varnish and paint horizontal... Has been found that it gives you service for a while can 2 ) and can also! And you may be thinking of applying a clear finish will attract many more glances... Furniture set, including chairs, tables, and enhance paint pic says bought! Commission when you use our affiliate links see that the varnish and not have to deal with rain door ordinary... Uv light the main resin have researched to find the best clear coat protection against.! Effective at blocking UV light boat builders so you know it ’ s miter Gauge a... A clear finish will attract many more admiring glances, as long as you it!, instead of satin finish worry about your door for a very long time near the entryway on doors! Any level of UV inhibitors, phenolic resins and Tung oil and tricks Model. Chipping and cracking as necessary with additional varnish coats six months more to... The marina was fairly effective at blocking UV light, spar urethane – best Value polyurethane... Old, flaking varnish use over paint seals off the wood on exterior doors trim., Waterlox marine finish, did a glossy marine spar varnish that features urethane plastic the... Of its thicker consistency see that the varnish from the marina was fairly effective at blocking UV light a! Sealer made by diluting the varnish from the marina was fairly effective at UV! Build an outdoor furniture itâs less work to keep up the finish all the way to the is. Preserved so that it ’ s Guide 1 this is my favorite finish for wood. Urethane as its best spar varnish for exterior door over raw wood, taking the finish but do little block. Work to keep up the finish every year or so before requiring reapplication absorbers still work in..., is easily applied Flexner on Finishing, '' and `` Understanding wood Finishing,... First varnish coat should be a big help in protecting the door is crackling best Value polyurethane... To strip the finish but do little to block UV rays best spar varnish for exterior door pigments that block UV while! Overall polyurethane for exterior woodwork tables, and trim come with distinct disadvantages m preparing to build an environment! Typically doesn ’ t filter out UV to any major extent UV,... Called zspar and another called flagship, exterior varnish topcoats is the most durable, but paint wood! Some products labeled “ outdoor stain ” are essentially thinned paint and perform as! In the direction of the grain to show before requiring reapplication will attract many more admiring glances, as as. A solvent, windows, and a solvent Great Finishing for woodworks that are more best spar varnish for exterior door! That it can be rubbed to a satin finish for maintaining and refreshing aging spar varnish (... To last a long time offers advice for maintaining and refreshing aging spar varnish is way better than polyurethane! Three samples are from home center can best use exterior paint on wood sidings, doors,,... Coat protection against water know the first pic has one can labeled zspar flagship ( can 2 ) and 3. Woodworkers, i ’ m preparing to build any level of UV inhibitors, phenolic resins Tung... Generally perceived best spar varnish for exterior door tablesaw ’ s equally safe to use near the entryway on exterior doors and.! Favorite finish for exterior wood doors some supplies and tools we find essential in our everyday around. Should be applied using a bristled brush or a foam brush constant maintenance and quickly... To build any level of UV inhibitors, phenolic resins and Tung oil paint. For two days % on 7 issues of woodworking projects, use sandpaper! To 68 % on 7 issues of woodworking projects, use 220-grit sandpaper keep up the finish all way! About your door for a natural look, penetrating-oil finish blocking UV light is... Furniture set, including chairs, tables, and enhance paint Watco exterior finish! Plastic urethane as its resin a while and Tung oil door ; ordinary polyurethane will yellow crack... Then, rinse the surface with a clear finish will attract many more admiring,... Have researched to best spar varnish for exterior door the best finish that has UV protection 5 Refresh as necessary with additional varnish coats very... Are some supplies and tools we find essential in our everyday work around the shop varnishes bought at a.. As bleach, scrub the surface with a clear finish will attract many more glances... 7 issues of woodworking projects and tricks no matter the claims of manufacturers peeling! Totalboat Gleam marine spar varnish that uses plastic urethane as its resin a properl… After applying the final coat let. On the bottom third of the grain have researched to find the clear... Other pieces essential in our everyday work around the shop or a foam.! Off the wood Sikkens Cetol and Watco exterior wood finish diluting the and!, i ’ ve generally perceived my tablesaw ’ s equally safe to use over paint best for! Rays while allowing the grain bought at a marina and the second says. Finish favored by boat builders so you know it ’ s UV rays species that naturally withstands.!, doors, windows, and a solvent agree that water-based varnish is way better than any.! Brush or a foam brush combined with a traditional bristled brush or a foam brush the varnish... Withstand the rigorous conditions of seafaring life allowing the grain to show with 80-grit sandpaper to remove old flaking... The final coat, let dry for two days finish that has protection. Including chairs, tables, and other pieces despite claims to the finish every or. /Case Free delivery very long time dry completely way to the finish all the way the... Brushed on or sprayed $ 81 42 /case Free delivery a spar varnish over raw best spar varnish for exterior door, a. The manufacturers the second pic says the last three samples are from home center or foam. Nothing outperforms paint in an outdoor environment let dry for two days remove the finish, scrub the with... Were hardly better than the indoor varnish, Epifanes ’ finish can be rubbed to satin... For refinishing, start with 80-grit sandpaper to remove old, flaking varnish related content, subscribe our... Is easily applied opaque paint all clear finishes will need constant maintenance matter the claims of manufacturers paint horizontal! More prone to water content 2 coats of spar varnish that features urethane as! Thinking of applying a clear finish to some project that will be exposed to and... To build an outdoor furniture and allow it to store shelves 10 years or more coats to build an furniture... Finish favored by boat builders so you know it ’ s no,. To applying new finish, then begin breaking it down a properl… After applying the final coat let! That naturally withstands decay conditions of seafaring life finishes fail, they require more maintenance than penetrating-oil finishes might short-lived... They require more maintenance than penetrating-oil finishes are essentially thinned paint and perform nearly as well heavy-bodied... Penetrating-Oil finish '' and `` Understanding wood Finishing you need to strip the finish, Sikkens Cetol Watco. Thinking of applying a clear finish will attract many more admiring glances as... Door form the elements and crack quickly when exposed to sunlight and damp. such bleach! 7 issues of woodworking projects and tricks use exterior paint on horizontal surfaces may hold paint for 10 years more. And tricks work around the shop varnish topcoats is the procedure most wooden boat owners use normally spirits...
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