Spar varnish


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spar varnish

[′spär ‚vär·nish]
(materials)
A flammable varnish made of drying oils, resins, thinners, and driers to provide a durable, water-resistant coating for outside or other severe service.

Spar varnish

A varnish that is resistant to salt, sun, and water.

spar varnish

A varnish made with durable oils and resins; used on exterior wood surfaces because of its superior weather-resistant qualities.
References in periodicals archive ?
Easy Plank Raised Bed Materials List ITEM MATERIALS DIMENSIONS QUANTITY Corner posts 4-by-4 2 or 3 feet 8 Long side boards 1-by-5 72 inches 12 Short side boards 1-by-5 60 inches 12 Outdoor screws Spar varnish Stacked Raised Bed Materials List ITEM SIZE LENGTH QUANTITY Long sides 2-by-4 96 inches 4 Short sides 2-by-4 89 inches 3 Long ends 2-by-4 48 inches 3 Short ends 2-by-4 41 inches 4 Optional trellis, legs 2-by-2 As desired 4 Optional trellis, spanner 2-by-4 96 inches 1 3-inch deck screws
Kilimanjaro uses modern spar varnish as a finish (as do a number of custom stockmakers), a combination of natural oil and urethane.
Spar varnish has built-in ultraviolet protection and is more flexible, so it holds up better in areas exposed to sunlight and water.
Technically, all resin-and-solvent mixes are varnishes; shellac is a spirit varnish--it uses distilled spirits as a solvent; spar varnish uses a drying-type vegetable oil as a solvent; enamel is a varnish containing pigments; lacquer is a demanding finish that uses a binder made from the natural polymer cellulose derived from wood (it lets tree limbs bend in the wind) or cotton.
Before hunting in wet weather, it pays to paint the inletting with at last a couple of coats of urethane or modern spar varnish, a combination of urethane and traditional oil, usually Tung.
Finish the cart with a clear exterior penetrating oil or sand thoroughly and apply an exterior urethane or spar varnish.
Tony's method is to strip off the old finish, sand the raw wood smooth, stain the wood to overcome sun bleaching, and then apply multiple coats of spar varnish, his preferred finish because of its durability and appearance.
Boat builders and restorers use multiple coats of epoxy and spar varnish to protect wood--instead of spar varnish alone--because the combination is much stronger than either finish is separately.
To get a nice finish on a fiberglass door, apply an oil-based gel stain followed by a clear topcoat like spar varnish that can withstand the abuse of sunlight.
Spar varnish is an exterior varnish that resists water and harmful ultraviolet rays from the sun.