Thermafiber Safing InsulationThermafiber® Safing is a compression fit mineral wool firestopping insulation product designed to provide fire protection in perimeter fire containment systems, floor and wall penetrations, construction joints, and other firestopping applications. These products are non-combustible, non-corrosive and non-deteriorating.

Safing is an integral component used to transition any perimeter fire containment wall system to the fire rated floor/ceiling. Thermafiber tested systems include:

  • Aluminum Spandrel Curtain Wall Fire Containment
  • Steel Stud-Framed/Gypsum Sheathing Curtain Wall Fire Containment
  • Glass Spandrel Curtain Wall Fire Containment
  • Granite Spandrel Curtain Wall Fire Containment
  • Precast Concrete Spandrel

Safing Technical Data Sheet


Assembly STC & Fire Resistance Ratings

Contact our technical team for assistance with selecting acoustic and fire rated assemblies on your next project.