Weyerhaeuser Trus Joist® TJI® joists with Flak Jacket™ protection provide a simple, cost-effective way to achieve one-hour fire-rated floor/ceiling assemblies. In multifamily buildings, they provide a one-hour fire-rated assembly with only a single gypsum layer and no mineral wool. They also help meet 2012 IRC R501.3 fire-protection requirements in single-family homes.
Awards
Architectural Products magazine "2012 Product Innovation Award"