Drylok Extreme, Gallon Interior/Exterior Latex White Masonry Waterproofer: Smooth, Ceramic Fortified Coating, Withstands Up To 12 PSI Of Hydrostatic Pressure, Resists Mildew Growth On Paint Film, Use On Interior, Exterior, Above Or Below Grade Masonry Walls, Basement Walls, Retaining Walls, Foundations, Landscape Walls, Cinder Blocks, Concrete Blocks, Bare Concrete Swimming Pools, Stucco & Brick, 

If water is leaking through existing masonry or you need to protect new construction, our proprietary formula is GUARANTEED to stop water. Unlike ordinary paint that simply adheres to a surface and can be forced off by incoming water pressure, DRYLOK® Floor & Wall Masonry Waterproofer actually penetrates the pores in that surface, bonding to the masonry and creating an impenetrable barrier.