A clear polyurethane topcoat can seal exterior paints and help prolong the life of the finish. Although sealers provide adequate protection to painted finishes, they aren't the ideal way to preserve ...

A clear polyurethane topcoat can seal your painted wood surfaces and protect them from damage if properly applied. Wait at least four to seven days after painting the wood before you apply a sealer.

"Sealants are a popular choice for waterproofing painted wood because they provide a protective ... You can waterproof most ...

Unlock to see our ratings and compare products side by side The Sherwin-Williams SuperDeck Clear Sealer is part of the Wood stains test program at Consumer Reports. In our lab tests, Wood stains ...