Bright White, Zinsser WaterTite-LX Ultra Matte Mold and Mildew-Proof Waterproofing Paint, 1 gallon, 2 pack: Is a modified acrylic copolymer concrete and masonry waterproofing paint and finish. It is designed to form an impermeable barrier to water on interior and above or below grade exterior, vertical or horizontal, concrete block (not lightweight block) and cast-in-place concrete. It stops moisture from entering basement or cellar walls and stops water from exiting when applied to canals or holding basins. It is ideal for use on fountains, reflecting pools, planters, retaining walls, privacy fences, and more.