Flameproof Companies

Since 1971, The Flameproof Companies has been a trusted manufacturer of Fire Retardant and Preservative Treated Lumber & Plywood, serving builders, contractors, and distributors nationwide. What began as a small treatment facility in Chicago has grown into a multi-state operation with manufacturing and distribution centers in Wisconsin, Texas, and Virginia—allowing us to support projects across the United States with reliable production capacity and fast delivery. Our Expertise We specialize in high-performance treated wood products designed to meet the demanding safety and durability requirements of today’s construction industry. Our product portfolio includes: D-Blaze® Fire Retardant Treated Wood Wolman® E MCA Preservative Treated Wood FX Lumber Guard XT® Exterior Fire Retardant MagTech™ Fire Retardant OSB Sheathing MCA Preservative Treated Timbers Engineered Lumber: I-Joists, LVL, Glulam Metal, Gypsum & Insulation Products Fire Retardant In-Wall Blocking Why Customers Choose Us With decades of industry experience, a commitment to quality, and a deep understanding of code-compliant treated wood applications, The Flameproof Companies provides dependable products, expert guidance, and nationwide shipping to keep projects on schedule.