Minwax Helmsman 40003M444 Spar Urethane, High-Gloss, Clear

Helmsman spar urethane is a specially formulated protective clear finish for exterior or interior wood that is exposed to sunlight, water or temperature changes. It contains UV blockers to reduce the sun's graying and fading effects. Helmsman spar urethane forms a protective barrier against rain and moisture and its special oils allow the finish to expand and contract with the wood as seasons and temperatures change.