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Hope You All Had a Happy & Safe 4th of July.
Hope You All Had a Happy & Safe 4th of July.



Pyro-Guard is pressure-impregnated, third generation, interior fire-retardant treated lumber and plywood for enclosed structural applications.

Pyro-Guard is recommended for enclosed sturctural applications such as:

  • Plywood roof sheathing
  • Roof trusses
  • Rafters
  • Floor joists
  • Mezzanines
  • Shelving
  • Load-bearing walls
  • Floor sheathing
  • Partition walls
  • Studs
  • Interior beams
  • Blocking
  • Steps
  • Stairways
  • Platforms
  • Stages
  • Plywood subfloors
  • Wall sheathing
  • Telecomm/electrical panels

Pyro-Guard has been strength-tested after prolonged exposure to elevated temperatures and moisture to verify its strength characteristics when used in roof systems and other recommended applications.

Pyro-Guard is the only major fire-retardant formulation produced by an American owned company.

Pyro-Guard was the first interior fire-retardant treatment with plywood roof span ratings and lumber strength adjustments based on high temperature testing.  Plywood was strength-tested after exposure to 170 degrees F, and lumber was strength-tested after exposure to 150 degrees F according to ASTM 5516 and ASTM 5664.  As a result, Pyro-Guard can be used with confidence in all recommended structural applications, including plywood roof sheathing and roof trusses.

Fire Performance:
Pyro-Guard is pressure impregnated deep into the wood to provide permanent protection, unlike coatings, which only provide superficial protection.
When Pyro-Guard treated wood is exposed to fire, non-combustible gas and water vapor are produced, and a layer of protective char forms, which hinders combustion and insulated the wood against further damage.
Pyro-Guard interior fire-retardant treated wood has a low rate of fuel contribution and heat release, and it maintains structural integrity longer than other building materials such as steel.  Consequently, fire damages and repair costs are minimized, resulting in reduced insurance rates.

Smoke Toxicity,
Pyro-Guard has successfully passed a stringent combustion toxicity test.  Smoke produced by Pyro-Guard treated wood was no more toxic than smoke produced by untreated wood.


PYRO-GUARDÒ is an Interior “Type A” fire retardant treated lumber and plywood with individual surface burning characteristics for the species and product listed under UL Certifications

  • Construction with Pyro-Guard treated wood requires no special tools or skills.
  • Pyro=Guard trusses and roof decks often qualify a mansonry wall building as "non-combustible" for insurance purposes.
  • Pyro-Guard can often be substituted for non-combustible materials without affecting building classification.
  • Use of Pyro-Guard wood partitions instead of untreated partitions often allows for an increase in square footage and lower insurance rates.
  • The use of Pyro-Guard wood roof decking is usually accepted in lieu of parapet walls in multi-family dwellings.
  • Even when sprinklers are mandatory, the use of Pyro-Guard can further reduce fire insurance rates.
  • Pyro-Guard is commonly accepted by building codes for partition walls, store fronts, fixtures and roof construction in shopping centers.




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