Zinsser WaterTite Professional Waterproofing Paint in Bright White helps stop water seepage through properly prepared concrete, stucco, cement and cinderblock. This low-odor, oil-based formula contains Portland cement and forms a smooth eggshell finish for interior basement walls, exterior foundations and retaining walls above or below grade. Its two-coat system resists up to 34 PSI of water pressure after full cure, and a mildewcide protects the paint film against mold and mildew growth. Apply by brush or roller to suitably prepared damp or dry masonry, working the first coat into the pores. Coverage averages 75 square feet per gallon for the first coat and 100 square feet per gallon for the second, depending on the surface. It dries to the touch in about 1 hour and requires at least 4 hours before recoating. This 3-gallon container is not intended for exposed floors subject to foot traffic, swimming pools or drinking-water containers. Clean tools with mineral spirits according to label directions.