Description: Thermafiber TopStop Head-of-Wall Insulation is high-density mineral fiber insulation that has been shaped to fit the trapezoidal flutes typical of metal or concrete decking. The composition of these specialized insulation boards matches that of the Thermafiber Safing Insulation commonly called for in UL or OPL approved head-of-wall constructions. Insulation used for TopStop is UL and OPL Classified, and is approved for use in designs that otherwise call for Safing Insulation. Thermafiber products have a minimum recycled content of 70% and are available with up to 90% recycled content.
MasterFormat Number(s): 07 84 56.13