Even the humidity in the air will make wood swell and since a polyurethane is a harder finish is more likely to crack because of the weather. spar urethane vs polycrylic. They are also hard to apply well, especially if a WR-LPU and can often be too hard and brittle for some hardwoods, as Brian's experiences suggested. Touch the brush at one corner, and draw it straightly in the direction. Polyurethane. Spar varnish is manufactured with a base of natural oil that includes soya, linseed or Tung. Varnishes made for outdoor use must have a certain degree of flexibility, or the finish will crack. The 2-part epoxy would certainly give you a good amount of protection on that bar top. The biggest difference between a polyurethane and a spar is the spar is made more elastic to withstand the weather extremes of being outdoors. But you’re saying use exterior/marine spar varnish? Spar varnish vs spar urethane is similar in that they provide a layer over the wood for protection against the elements. Contractors and consumers doing home repairs began using the product for other wood in and around the house, such as doors, … By D.C. Winston. home | projects | blog. After finishing one line, move next and proceed to do another line of it. Then start applying the mixture over your wood, slowly and gently. It also allows the wood to expand, contract, or flex with temperature changes. The amount of oil in spar urethane makes it softer and more pliable compared to polyurethane which tends to be quite hard when dried. Spar varnish is a wood finishing varnish. Spar urethane is intended for out side use. This varnish is meant to shield the wood from stain, water, solvent discoloration and heat. Once they are dried, collected, and processed, you can dissolve them in a solvent such as alcohol. Hey Lee. Spar urethane is better at repelling water and non-yellowing. Oil. It's the go-to material for any exterior woodwork that needs a clear finish, but because its high resin content gives it a yellowish hue, it isn't the best choice for interior furniture. However, spur urethane takes things a step further as it is designed to be water-resistant. The only place that carries it around here is Woodcraft at $36 per quart! If by chance you mean box store spar urethane, I’d use whatever is next on your list. A variety of time-tested protective treatments in a variety of sizes to suit any project shutters, wood hand.. Store Pickup at your neighborhood Ace make the best Marine coatings IMO and experience expensive mahogany,,! I know teak oil is the traditional method of protecting the wood, but it seems to me that the labor savings and possible life extension of my wood trim might warrant switching to spar varnish? Spar varnish is perfect for outdoor projects and for raw wood used for exterior doors and trim on rustic homes. I especially like the wipe on type. Some varnish doesn’t work well with epoxy, if the can says cures in 4 hours and it’s still tacky in 4 days, they aren’t liking each other. Wondering why the knowledge of the two finishes matters? Spar Urethane vs Polyurethane. Such oil is mixed with solvents, driers, ultraviolet protector and resins in order to form a glossy surface. November 3, 2020. Be sure to catch and even out any drips. The boards finished with Epifanes, a Dutch marine varnish, and those that were first treated with an epoxy sealer and then finished with Epifanes as shown by Sean Clarke in issue #178 “A Durable Exterior Finish” came through almost unscathed, a hardware store spar varnish had mixed results, while those boards finished with a water-based polyurethane and those finished with a … The amount of oil in spar urethane is much higher, which makes it softer and more pliable. Now it’s time to take a look at how these products compare across a range of features. It consists of a hard resin and solvent-based solution that provides a thin plastic-like barrier across whatever surface it is applied to. And then it can be used as a finish. Should you want to stay with a spar varnish, any of the true spar varnishes (think boat store, names like Epifanes and others) you will be faced with the amber coloring that they have, and they get darker over time. Use quick, up-and-down strokes when applying. Shellac dries by the evaporation of it’s solvent. Spar varnish (also called marine varnish) was originally intended for use on ship or boat spars, to protect the timber from the effects of sea and weather. It sounds like a good quality varnish might be a better way to go. So varnish, not urethane. Let’s get started. One hardware store varnish has surprisingly held its own over the long haul: Minwax Helmsman Spar Urethane. It is more difficult to fix and repair the urethanes, but not impossible, especially if you have a regular maintenance routine. Spar urethane, of which Minwax Helmsman is a leading brand, is spar varnish that includes urethane plastic as one of its resins. Have been reading about spar urethane and spar varnish and don’t know which way to go. Marine varnish is just another name for a similar product -- naturally intended for protecting wood surfaces under marine (wet)conditions. Powder coating is a durable final finish for a broad range of manufactured items made of fiberglass including boats and sports equipment. They were flexed by the wind loads they supported, attacked by sea and bad weather, and also suffered from UV degradation from long-term exposure to sunlight. Spar Varnish vs. Spar Urethane: What’s the difference? Does exterior vs. marine matter? Helmsman® Spar Urethane is not recommended for large exterior surfaces where maintenance would be difficult, such as decks and siding. Spar varnish vs. spar urethane. Urethanes are harder, glossier and more durable, especially if a true LPU. system. Obviously, epifanes is too exspensive for such a large area. Then there are different grades of spar varnish. Always spot test on a hidden area to ensure satisfactory results. Sounds like there are also some better products out there than the Helmsman spar urethane. DANGER:Rags, steel wool, other waste soaked with this product, and … Urethanes are harder, glossier and more durable, but they can also be hard to apply well. Take the brush and dip only the tip into the mixture. Originally spar varnish was developed for use on boats and other items exposed to a great deal of weather conditions. Spar urethane has a higher amount of oil which is why it is sometimes called “long oil varnish”. The spar urethane application was perfect for boat use because it makes wood waterproof while providing a finish that is both durable and perfectly clear. Have tried Helmsman, Zar and Rustolium brand exterior, UV protected varnishes to save some money, but went back to the System Three. Exterior finishes give protection for required maintenance due to moisture, heat, expansion, contraction and ultraviolet light. Do you have a brand that you know works well that you’d suggest? I do see spar urethane readily available though and I'm … Varnish-Spar Urethane-Detailed information on each Topcoat-SHELLAC: Shellac is a natural product. Dallas. Apply it in the direction of your wood’s grain. Anything “urethane” isn’t going to do well in the UV rays outside. We use furniture items differently. My favorite outdoor finish is actually a marine varnish known as Epifanes. Post by tiptop » 12/21/10 13:32. I'm finishing out a fiberglass rod and want to use varnish on the wraps instead of epoxy and am finding that spar varnish isn't being carried by local hardware stores anymore -- even Ace. It’s a formula that gives your outer wooden structures sufficient protection against damaging elements such as sunlight, water, as well as chemicals on wood surfaces above the waterline. Do not brush it back and forth. Some are for indoor use, such as wardrobes, coffee tables, and beds. Spar varnish is an older formulation of varnish vs. Urethane Varnish is a modern formulation of a tough clear coating used primarily on wood surfaces exposed to outdoor conditions. This is why it is best to use the polycrylic coat on light-colored woods, where this would not be as apparent or noticeable. McCloskey Man O' War Marine Spar Varnish #80-7505; McCloskey Man O' War Marine Spar Varnish Spray #80-7555; Season after season, Man O'War stands up to what nature dishes out. It is made from the dried secretions of the female Lac beetle. There are 2 main types of clear outdoor finish; teak oil (penetrating oil), and spar varnish: Teak Oil (Penetrating Oil) Penetrating oils, often called teak oil (outdoor finish) or danish oil (indoor finish), soak into the wood and don't build up on the surface. Non-Urethane Spar ( Marine ) Varnish is a two-component, post-catalyzed urethane topcoat for use outdoors is McCloskey® Man Spar! Variants of spar urethane include spar varnish. Light amber in color, this finish is made with tung oil and linseed oil, as well as phenolic resins. Slight ambering may be experienced when Helmsman® Spar Urethane is applied over light-colored stains or wood surfaces. When you look at urethane vs polyurethane, you will notice that urethane can be molded into different shapes while polyurethane is only for hard, flat surfaces like side tables. In addition to protecting the wood, it also provides natural ultraviolet light protection. Apply using a natural-bristle brush. I will walk you through this comprehensive polyurethane vs spar urethane guide and help you select the right finish. clean, and then apply a spar varnish. Another major difference is in its composition. Spar urethane finish used to be termed "marine spar urethane" because it was used extensively on boats. Step 3: Brush the Spar Varnish Lightly. I would use a marine grade spar. Arguably the most noticeable difference is the oil concentration between spar urethane and polyurethane. These formed part of the masts and rigging, so suffered a hard life in service. It has a bit of an elastic property to it so it can expand and contract with weather conditions. What are the opinions out there regarding finishing wood trim on my Capri 18 with spar varnish instead of continually using teak oil? Spur urethane can be oil-based or water-based. Spar urethane would be an excellent choice for that job. For furniture, I use polyurethane. Spar varnish was originally developed for coating the spars of sailing ships. A proper coat of spar urethane can last for approximately 10 – 15 years making it a reliable surface coat for surfaces that get used often. 3599 posts in 3426 days #4 posted 11-18-2014 07:54 PM . Mike. Spar varnish is superior to spar urethane in UV protection. Spar varnish is often used on items that will be near or on the water, like a wood boat, decks, beach chairs, etc. They may contain linseed, rosewood, or tung oil, and an assortment of other ingredients. Why Choose the Right One Between Spar Urethane and Polyurethane? Rain and moisture; UV rays from the sun; Coastal salt spray; Seasonal temperature changes; The strongest name in clear protection. Choose from gloss, semi-gloss or satin finishes, to beautify your interior and … From a technical stand point there's a huge difference between marine spar urethane and spar varnish. A spar varnish is also made to be water-resistant, since exposure to moisture will cause wood to rot over time. Applying some Minwax Helmsman Spar Urethane to some of our 100 year-old heart pine barn doors. As with all finishes, the quality and durability of the outcome is determined by the preparation and surface application. RUST-OLEUM 207008 Spar Varnish, Clear, Polyurethane Rust-Oleum Marine Spar Varnish deserves mention as the best exterior polyurethane product due to its reputation as a reliable product. Teak Oil vs Spar Varnish. Spar Varnish Vs. Spar Urethane. I know marine is used for boats and such – is one stronger/preferrable to the other? For a satin finish that has even better depth and clarity, Gleam 2.0 Marine Spar Varnish is also available in a Gloss & Satin 2-Quart Combo Kit that includes 1 quart of Gleam 2.0 Gloss Varnish and 1 quart of Gleam 2.0 Satin Varnish. 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