For COLORBOND® steel and ZINCALUME® steel, BlueScope offers a warranty against corrosion to perforation by weathering in the natural elements for a period of up to 36 years* from the date of installation. BlueScope also warrants that the paint system on COLORBOND® steel will not flake or peel due to natural weathering for a period of up to 20 years* from the date of installation. Warranties differ per product and have various terms and conditions to be met before your project qualifies for a warranty. Warranties of shorter time periods are available where different terms and conditons apply.* Warranty terms and conditions apply. Warranties are not available for all products and applications. The duration and terms and conditions of available warranties vary according to product use and application.