Alu-Zinc Steel Core: The base of the tile is a steel sheet coated with an aluminum-zinc alloy (often referred to as Zincalume). This coating provides excellent corrosion resistance, with tests showing it can last 6 to 9 times longer than ordinary galvanized steel.
Basecoat: An acrylic resin basecoat is applied to the steel, which acts as an adhesive for the next layer and provides additional protection