Stone Edge Surfaces Deck Seal is a water based Tintable “Base” Waterproofing Sealer for concrete or wood decks. It is a 100% Acrylic & Urethane, Insulating Ceramic, and dries to a beautiful Matte Finish. It’s Tough, Durable, Flexible Enough to withstand freeze/thaw conditions, and is built for foot traffic, deck furniture and more. It’s Mildew Resistant, UV Stable, non-yellowing, and has excellent adhesion qualities.