FIRE RETARDANT PLYWOOD SYP SHEATHING 23/32"
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
- Floor joists
- Load-bearing walls
- Floor sheathing
- Partition walls
- Interior beams
- 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.
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.
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.