Rainguard"s Waterproofer Multi Surfaces 7 Year has been designed for the homeowner as an easy to use and effective ready-to-use solution to the damaging affect of exterior water, salt and weathering. Developed using Rainguard"s exclusive Micro-lok technology, it can be used to protect a wide variety of unpainted or unstained cocnrete, masonry, brick and wood porous surfaces. With a 7 year, money back guarantee, Waterproofer Standard 7 Year is "The Professionals Choice". Coverage rate porous masonry surfaces 60 - 100 sq"/gallon, dense masonry surfaces 100 - 150 sq"/gallon, 300 sq"/gallon wood. 5 Gallon container.