Smooth waterproof paint is perfect for most demanding conditions. Fully transferable 15 year warranty. Ideal for interior, exterior, above or below grade masonry walls, basement walls, retaining walls, foundations, landscape walls, cinder blocks, concrete blocks, bare concrete swimming pools, stucco and brick. Ceramic fortified for ultimate in waterproof protection. Specially formulated to resist mildew growth on paint film. Stops 12 psi which is greater than 25 foot high wall of water. Passes ASTM D-7088 Resistance to Hydrostatic Pressure an ASTM D-6904 Resistance to Wind Driven Rain.