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FlamePRO® brand fire retardant treated wood (FRTW) is lumber and plywood pressure impregnated with FlamePRO Interior Type A High Temperature (HT) fire retardant chemicals. FlamePRO
brand fire retardant is a proven successful formulation based on the American Wood Protection Association P50 Standard for Fire Retardants. FlamePro fire retardant lumber and plywood meets the requirements for FRTW listed in the International Code Council Acceptance Criteria ICC AC66 conforming with the International Residential and the International Building Codes (IRC & IBC).

FlamePro FRTW products comply with AWPA UC-1 and UCFA use category systems, FlamePro treatment process meets the AWPA T1 standard and FlamePro chemical has been analyzed to confirm the formulation meets AWPA P50 standard.

FlamePRO FRTW is available nationwide through a network of independently owned and operated wood treatment facilities licensed by Koppers Performance Chemicals Inc. A 50-Year Limited Warranty against structural failure due to heat or humidity is available. See the FlamePRO 50-Year Limited Warranty for details. Available at Koppers Performance Chemicals Inc., Attn: Consumer Affairs, P. O. Drawer O, Griffin, Georgia 30224-0249 or visit

FlamePRO brand fire retardant treated wood is typically specified for use in interior areas not exposed to the weather or wetting and where the adopted building code permits the use of wood or fire retardant treated wood.


  • Independently Tested
  • Highly Cost Effective
  • Quality Monitored by Independently Inspection Agency
  • Limited Warranty
  • Pressure Treated (Not a Paint or Coating)
  • Low Corrosion to Metal, Hardware and Fasteners
  • Low Hygroscopicity
  • Low Smoke Development Values
  • Low Flamespread Index Values
  • ICC-ESR Report
  • Superior Strength Durability
  • ASTM E84 Extended 30-minute Test
  • ASTM E119 1 & 2 Hour Wall Assemblies
  • Optional Orange Color for Building Site Recognition


All FlamePro brand fire retardant treated wood has been tested at Underwriters Laboratories resulting in flame spread and smoke development ratings of 25 or less when subjected to ASTM E84 surface burning characteristics in tests of 30 minute duration without evidence of significant progressive combustion. Consequently, wood treated with FlamePro fire retardant has qualified for the UL “FR-S”, Class A, “Class 1” classification for surface burning characteristics.