http://www.rhinoroofprotection.com/wp-content/uploads/2015/06/NXTCOOLZONE.mp4 NXT COOL ZONE is recommended for: *New and old cement roof tiles *Clay and terra cotta roof tiles *Concrete slabs roofs *Galvanized, zinc coated and other metal sheet roofing, including color coated sheet metal *Bitumen, asphalt shingle roofs