Gallon Watertite-LX Mold & Mildew-Proof Waterproofing Paint is a latex base formula. Guaranteed to stop water, it resists up to 20 pounds of water pressure. It also contains a mildewcide to prevent the growth of mold and mildew for a minimum of five years after application, making it great for basements and other masonry surfaces where mold and mildew can be problematic. Prevents the growth of mold & mildew on the paint film for 5 years - guaranteed. Smooth, non-gritty finish applies easily to wet or dry walls. Great for basements and other interior/exterior above & below grade masonry surfaces.