United Gilsonite 27513 Drylok Masonry Waterproofer Latex, 1 gallon, White GUARANTEED to stop water - withstands 10 pounds of hydrostatic pressure (PSI), equivalent to a wall of water 22 feet high Fully transferable 10 Year Warranty Helps protect against radon gas penetration by reducing vapor transfer Low-odor formula complies with all current VOC requirements Breathable film will not trap moisture in the masonry