Seal-Once Composite Decking Waterproofer

Seal-Once Composite Deck Waterpoofer provides the very best waterproofing on the market for composite decks, and it's Non-Toxic! This means it's safe to use around your family and pets, plus you don't have to deal with the strong smell of other sealants. Prevents mold & mildew from forming as quickly, and will increase the life of your deck greatly. We recommend cleaning the surface prior to application.