National Metal Buildings ( known as NMB ) has a limited rust through warranty on all 14-gauge steel frames and 29-gauge sheet metal for 10 years, and all 12-gauge steel framing and 26-gauge sheet metal for 20 years. 

All warranties assume normal care and maintenance using mild soap and water.
Use of harsh chemicals to clean metal will void sellers limited warranty.
Limited Rust through warranty is voided if any material stands in water due to unlevel ground or low-lying ground installations.

ENVIRONMENT * This Limited warranty does not apply in the following cases:  Metal rust or corrosion from coastline salt conditions, attack from chemical agents, fumes, liquids, or solids other than direct rain falling onto product, contact with soils, fire, ashes, fertilizers, or other moisture retaining substances failure to remove debris and /or failing to provide free drainage of water including internal condensation from all surfaces of the product, deterioration of the sheet metal caused by contact with green or wet timber or treated woods, installations, subject to unusually corrosive environments at any time in the future, storms or other acts of God. Buyer understands that non certified buildings are not wind rated and that the purchase of a certified building with a wind rating is not a warranty.  NMB is not responsible for any damages from wind, storms or acts of God.

NMB warrants workmanship to be free of defects for a period of 120 days. NMB warrants windows entry doors and roll up doors for 120 days against workmanship defects. 

Components are guaranteed to be free of defects for 1 year. This warranty does not include maintenance, normal wear, damage beyond manufacturer’s control, or replacement labor. 

Any abuse or alteration, including without limitation to any interior or exterior modifications or the addition of electric or plumbing shall void such limited warranties.

For more information, please contact your design professional.