The DRYLOK 5 gal. White Masonry Waterproofer is a low-odor paint formulated to protect any interior, exterior, above- or below-grade masonry surface. This waterproofing paint can withstand 10 lb. of hydrostatic pressure equivalent to water pressure at a depth of 22 ft. This ready-mixed formula requires only 2 hours to dry to the touch and 3 hours to accept recoating for quick task completion.