The 2018 international building code clarifies that fire retardant treated wood frtw manufactured without using the pressure process must be impregnated with chemicals.
Frtw roof deck.
Roof deck fact check.
When supporng an frtw roof system unless the wood members are heavy mber which has an.
New language in the 2018 ibc clarifies for building officials the regulations for using frtw in types i ii and iii construction which call for the use of non combustible materials or frtw.
And or frtw joists or trusses.
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.
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.
Ul evaluation report er7002 01 has been issued for pyro guard by underwriters laboratory confirming compliance with the international building code.
Metal and reinforced concrete beams or joists.
This type of roof construction was classed as non combus tible even though the vapor barrier adhesive and roo ng used.