Pre-painted Galvalume Sheets has been used extensively by the construction industry throughout the world for nearly two centuries. Because of its excellent corrosion resistances, it has become the preferred material for a wide range of construction uses, particularly roofing and walling. Sheet is unique as a building material. Sheets combines the strength of steel with the excellent corrosion protection of zinc or zinc/aluminium alloy coatings. Sheets can be punched, pressed, roll-formed and joined into a limitless number of structural and decorative building products.