Exterior: Spar Urethane

Good for: Exterior doors, trim, and furniture. Contains UV absorbers that protect the finish and the wood from the sun's rays. Made with a special blend of oils and resins that allows it to flex as the wood surface expands and contracts. Recoat the finish when it turns dull, typically once a year. Available in gloss, semi-gloss, and satin, and in oil-based and water-based formulas.

Oil-based spar urethane
Apply with: synthetic-filament brush or a can of aerosol spray
Number of coats: three
Hours between coats: 4
VOCs: 450 grams per liter

Water-based spar urethane
Apply with: synthetic-filament brush or a can of aerosol spray
Number of coats: four
Hours between coats: 2
VOCs: 275 grams per liter

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