Hardie fiber cement siding typically will last 30 years or more. Hardie’s proprietary product – composed of Portland cement, sand, water, and cellulose fibers – was designed to last for the lifetime of your home, with minimal upkeep required. Hardie siding is also resistant to fire, rotting, and termites, and carries a 30-year non-prorated warranty (15 years for paint finish), making it your best siding option pound for pound.