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 Curing Membrane and Penetrating Sealer soaks right in and provides matte 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.