Officially Kool Deck® certified and trained by Mortex Manufacturing Co., Inc. to install Kool Deck Products. Significantly lowers the surface temperature of concrete. Withstands thermal expansion and contraction better than concrete. Requires minimal cleaning. Just rinse with water. When necessary, scrub with soap & water to keep the surface looking great. Proprietary mixture of natural organic substances & synthetic iron oxide pigments. Environmentally safe. Unaffected by normal pool chemicals.