Since 1971 The FLAMEPROOF COMPANIES have manufactured Fire Retardant and Preservative Treated Lumber & Plywood. What began as a small treatment facility in Chicago has now grown into a nationwide operation with additional manufacturing & distribution facilities in Wisconsin, Texas, and Virginia.

Today, The Flameproof Companies is a manufacturer of high-performance treated wood products that specializes in the production of treated lumber, plywood, OSB and engineered wood products featuring a range of superior chemistries.