Decramastic tiles also called color stone roof tiles. For the older generation of "decramastic tiles" means a scalloped metal tile roof with stone chips. Often attributed to the problem of this product, some continue to be associated with the new generation of acrylic, stone chips, and metal tiles produced today.
The reality is that they are completely different products and processes.
Today, color stone coated roof tiles use zincalume as a base with an acrylic coat over laid with natural stone chip with a second coat of acrylic overglaze.
The stone chips used today are similar to the originals with some synthetically colored chip blended to offer a wider choice of color combinations.