The first pic has one can labeled zspar flagship (can 2) and can 3 also says z-spar. Paint, stain, exterior varnish, penetrating-oil finish? Be careful. 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. Plus, it comes in eye-catching colors to improve your home's curb appeal. Save up to 68% on 7 issues of woodworking projects and tricks. After applying the final coat, let dry for two days. The first varnish coat should be a sealer made by diluting the varnish 1:1 with solvent, normally mineral spirits or turpentine. 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). Dyes impart some color to the finish but do little to block UV rays. We may receive a commission when you use our affiliate links. All finishes marketed for exterior surfaces aren’t the same, no matter the claims of manufacturers. Varnish can be used to protect, preserve, and enhance paint. And the name “spar varnish” comes from the boating world, where the long wooden poles that support the sails are know as spars. Step 5 Refresh as necessary with additional varnish coats. For more related content, subscribe to our newsletter! 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. Here are some supplies and tools we find essential in our everyday work around the shop. As luck would have it, I just finished two garden benches using a well known gloss spar varnish applying the recommended three coats. Bob Flexner is the author of "Flexner on Finishing," "Wood Finishing 101," and "Understanding Wood Finishing. For a natural look, penetrating-oil finishes might be your best bet. When it is about wood objects for exterior use, spar varnish does the best job. Combined with a properl… Eligible for Free Shipping. 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. 1. The Components. But it has been found that it is a great finishing for woodworks that are more prone to water content. Most professionals agree that water-based varnish is the best product to use over paint. 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. I’m torn between applying a film-forming finish, such as paint, opaque stain, or exterior varnish, or a penetrating-oil finish. Polyurethane can be applied with a traditional bristled brush or a foam brush. It seals off the wood from the sun’s UV rays. I’m torn between applying a film-forming finish, such as paint, opaque stain, or exterior varnish, or a penetrating-oil finish. For refinishing, start with 80-grit sandpaper to remove old, flaking varnish. How can you eliminate brush marks when finishing. Scrollsaw, Carving, and Decorative Projects. As such, spar urethane is a blend of spar varnish that features urethane plastic as the main resin. 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. Spar Varnish A storm door would also be a big help in protecting the door form the elements. Thanks Steps to Applying Varnish on Doors. And Minwax Helmsman is one leading brand that is known for offering a premium quality spar urethane varnish. But there is no industry agreement on the naming, so you’re left with price and where you buy the product being the best indication of which you’re getting. Patrick. One hardware store varnish has surprisingly held its own over the long haul: Minwax Helmsman Spar Urethane. What's the best option? You can best use exterior paint on wood sidings, doors, windows, and trim. 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. Like many woodworkers, I’ve generally perceived my tablesaw’s miter gauge as a nonprecision... read more. Exterior finishes that contain these additives are much more expensive than those that don’t, but they are the only ones that hold up in sunlight. The valuable wood of yours needs to be protected and preserved so that it gives you service for a very long time. Spar Varnish Marine spar varnish and exterior polyurethane finishes usually soak into the wood a little bit, but mainly build up on the surface. See on Amazon. This is the finish favored by boat builders so you know it’s going to last a long time. 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? The distinction in exterior clear finishes is whether they contain UV-resistant additives, called “UV inhibitors” or “UV absorbers.” And whether they contain enough of these additives to be effective. You need to apply five or more coats to build any level of UV protection. Send your woodworking questions to askwood@woodmagazine.com We may receive a commission from sales referred by our links; however, we have carefully selected these products for their usefulness and quality. Apply 2 coats of spar varnish and not have to worry about your door for a while. Set your ... Clear Satin 275 VOC Oil-Based Exterior Spar Urethane (2-Pack) Model# 242182 $ 103 96 /case 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. Epifanes Spar Varnish. 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. 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. Sand the door in the direction of the grain. The sun will dull the finish, then begin breaking it down. The longest-lasting protection is exterior paint. What finish should you use? Mirror Finish. What’s the best route? Its low toxicity, however, means that it’s equally safe to use near the entryway on exterior doors and trim. Exterior Paint Rust-Oleum Perma-White Exterior Paint. When applying varnish over raw wood, use 220-grit sandpaper. You don’t necessarily need to strip the finish all the way to the wood. The spar finishes you buy at home centers and ordinary paint stores generally either don’t contain the absorbers or contain too little to be effective against sunlight. 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. We’re entering mid-summer and you may be thinking of applying a clear finish to some project that will be exposed to sunlight outside. • Two inevitable ravages of nature—water and the UV rays in sunshine—damage wood and the finish protecting it. However, this does not impact our recommendations. Minwax Helmsman Indoor/Outdoor Spar Urethane – Best Overall Polyurethane for Exterior Wood Doors. But the middle two varnishes were hardly better than the indoor varnish, despite claims to the contrary from the manufacturers. This formulation enables it to render an impre… 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. This is a very high-gloss marine varnish that is suitable … 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? EMAIL REQUEST FOR SAFETY INFORMATION Send your woodworking questions to askwood@woodmagazine.com. But now many different and effective formulations have made it to store shelves. Thanks for posting this. (Use marine-grade spar varnish for an exterior door; ordinary polyurethane will yellow and crack quickly when exposed to sunlight and damp.) Give the sealer coat a light sanding, and then apply a minimum of three more coats of varnish with a light sanding between each. The best protection for an exterior door is opaque paint all clear finishes will need constant maintenance. In fact, my sample was done inside a west-facing window for six months. 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. Subscribe ». Step 1 This marine-grade vanish is composed of UV inhibitors, phenolic resins and Tung oil. Epifanes Clear Varnish – A Great Bargain. Remember to be patient: It takes several days to properly finish an exterior door … • Once damaged, wood fibers separate from the underlying wood, taking the finish with them. I mainly looked at three products, Waterlox Marine Finish, Sikkens Cetol and Watco Exterior Wood Finish. Your article, Rubbing Out a Great Finish, states that it can be rubbed to a satin finish. High-quality formulations have finely ground pigments that block UV rays while allowing the grain to show. In my opinion spar varnish will give you the best clear coat protection against water. McCloskey Man-O-War marine spar varnish is way better than any polyurethane. 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. The sample board has something called zspar and another called flagship. Finally, choose a top-quality marine-grade exterior spar varnish. You can see that the varnish from the marina was fairly effective at blocking UV light. 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. 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