Minwax® Helmsman® Spar Urethane is specially formulated as a protective clear finish for exterior or interior wood exposed to sunlight, water, or temperature changes. Contains UV blockers to reduce the sun's graying and fading effects. Forms a protective barrier against rain and moisture. Special oils allow the finish to expand and contract with the wood as seasons and temperatures change. Ideal for use on doors, windows, trim, bathroom cabinets, bar tops, kitchen countertops, outdoor furniture.