Just like natural and man-made stone, concrete, stucco and masonry are porous materials that will start to break down, dust, pit, crack, and/or stain when subjected to weather, water, oil, and UV rays. The only way to prevent damage and deterioration is to protect your surfaces with a good quality sealer. Specially formulated DryLok Natural Look Sealer soaks right in and provides an invisible coat of protection that looks beautiful and natural. Use on interior and exterior masonry surfaces, including concrete driveways, basement floors, garage floors, concrete sidewalks, patios, terrazzo, brick, and slate. DryLok Natural Look Sealer protects exterior masonry surfaces, minimizing concrete dusting, cracking, and pock-marking. Water base, one-coat sealer. Ideal masonry primer. Hardens concrete.