Metal and reinforced concrete beams or joists.
Frtw roof deck.
A roof deck system of frtw may be supported by.
The 2018 international building code clarifies that fire retardant treated wood frtw manufactured without using the pressure process must be impregnated with chemicals.
And or frtw joists or trusses.
When supporng an frtw roof system unless the wood members are heavy mber which has an.
Pyro guard was the first frtw fire retardant treated wood to be issued a code compliance report based on high temperature testing for roof sheathing and framing uses.
Ul evaluation report er7002 01 has been issued for pyro guard by underwriters laboratory confirming compliance with the international building code.
Exterior fire x treated roof systems including roof supports trusses and decking may often be substituted for non combustible construction in open warehouses storage sheds and other structures with no penalty in the insurance rates or the building code classification of the structure.
Roof deck fact check read the truth about painted coated and laminated osb used in lieu of noncombustible materials in our article.
Roof deck fact check at one time roof assemblies were assumed to be re safe if the deck and its supports were of metal particularly when the re hazard of the building s contents were considered low to moder ate.