Rainguard Waterproofer Advanced 10 Year is a ready-to-use professional quality clear, colorless penetrating waterproofer designed for homeowners wanting maximum protection against damaging from water, salt and weathering. Using Rainguard"s exclusive Micro-lok technology, it incorporates a multi-use design for a wide variety of homeowner water protection requirements for unpainted vertical & horizontal concrete, masonry, brick, natural stone and wood porous surfaces. With a 10 year, money back guarantee, Waterproofer Advanced is "The Professionals Choice". Apply in cold weather down to 35°F ( 1.7°C). Coverage rate porous masonry surfaces 60 - 100 sq"/gallon, dense masonry surfaces 100 - 150 sq"/gallon, 300 sq"/gallon wood. 5 Gallon container.