The ZINCALUME coated steel has been formulated to give a significantly longer service life than a galvanized coating. The ZINCALUME steel coating combines the corrosive protection of aluminium with the sacrificial protection of zinc, giving the advantages of both metals. The resulting alloy coating enhances corrosion resistance, making it ideal for such applications as roofing. This is why the Tilcor roof system is referred to as "The final Roofing System", and is backed up with a 50 year limited warranty.