We are the

Flameproof Companies

Manufacturers of Quality Treated Wood Products and Distributors of Commercial Building Materials.


Flameproof Companies

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 manufacturing & distribution facilities in Wisconsin, Texas and most recently, the Pacific Northwest.

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 including:

  • fire retardants
  • metal based preservatives
  • non-metal based preservatives
  • intumescent coatings
  • non-intumescent coatings
  • water repellants
  • mold release agents
  • other unique chemistries


Chicago   |  Wisconsin   |   North Texas  |   Pacific

Products & Services

Fire Treated

We stock a complete line of lumber and plywood. We provide quick turn around on special order treated items.

FSC® and LEED Certified Products

FSC® Certified Lumber and Plywood (treated and untreated) for all of your FSC or LEED projects. Certificate Code: RA-COC-001997

Building Products

We specialize in non-combustible building materials and hard-to-find commercial industry items such as IPE, Nichiha, 5/4 decking, Gypsum, Metal Studs & Track