Old Masters Exterior Oil-Based Spar-Marine Varnish is a durable exterior coating. This product can be used on wood, fiberglass, coated metal or painted surfaces. It contains Ultra Violet Absorbers for advanced sun protection. Use on exterior surfaces such as fences, railings, lawn furniture, doors, boats and marine surfaces. For interior use on windowsills and door frames for added Ultra Violet protection. As with all exterior clear finishes, this product will not offer unlimited protection against the elements. Surfaces which receive direct sunlight may have to be re-coated annually to maintain gloss and to prevent cracking and peeling. Coverage: Approximately 125 sq.ft/quart, depending significantly on application and condition of the wood. Satin Finish. Quart. Old Masters