... stone coated metal roof tile is based on Al-Zn steel.the before,after protective film treatment ensure to be the best roof . Color stone coated metal roof ... 6%,with non-toxic acrylic adhesive and natural stone,color stone coated metal roof provides the advantages of long life,strength, ... economy weight of color stone coated metal roof is only 1/6 weight of an ordinary cement tile, it is very convenient ...