Just like natural and man-made stone, concrete and masonry are porous materials. They will start to break down, dust, pit, crack, and/or stain easily when subjected to weather, water, oil, and UV rays. The only way to prevent damage and deterioration is to protect surfaces with a good quality sealer. Latex base DRYLOK Concrete Protector provides clear, weatherproof protection against deterioration caused by de-icing salts, household cleaners, acid, gasoline, oil, and weathering. Formulated with our exclusive SALTLOK Technology, it penetrates into the surface and provides superior resistance to unsightly efflorescence stains (salt deposits) that are often visible on brick, block, and poured concrete surfaces. Protect interior, exterior, vertical, and horizontal masonry surfaces like stucco, brick and concrete. Prevents excessive dusting, surface cracking and pock marking. Use on bare masonry or previously painted surfaces. Application tools: brush, roller, spray, squeegee, pad applicator. Dry time: 1 hour. Recoat time: 6 hours. Coats: 1-2.