Thompson’s WaterSeal semi-transparent wood sealer provides long-lasting exterior wood protection. Semi-transparent opacity adds moderate color and shows medium wood grain.Durable protection from water and sun damageYear round protection in just one coatAdds moderate color and shows medium wood grainAssured five years on decks, seven years on fences and sidingHelps prevent water damageLab tested for waterproofing woodLightly tinted sealer and sunblock protects wood and enhances the wood grain