Thompson’s WaterSeal transparent wood sealer provides long-lasting exterior wood protection. Transparent opacity adds subtle color and shows the most wood grain.Barely tinted sealer and sunblock protects wood and highlights natural wood grainHelps prevent water damageProvides a mold and mildew-resistant finishDurable protection from water and sun damageGuaranteed 4 years on decks, 5 years on fences and siding