Rockwool ROXUL Safe® Safing Strips are semi-rigid stone wool insulation sections pre-cut to 3" x 4" x 48" for fast, precise installation in perimeter fire containment systems. Designed to fill the linear gap between concrete floor slabs and exterior curtainwall or cladding assemblies, these non-combustible mineral wool strips are a critical component in tested and approved perimeter firestop systems — forming a reliable thermal and fire barrier that resists flame spread and toxic smoke development even at temperatures up to 2,150°F (1,177°C).
Ideal For
- Perimeter fire containment at floor-to-curtainwall and floor-to-exterior wall gaps
- Linear firestop systems in commercial and high-rise construction
- Filling slab edge voids in steel stud and glass curtainwall assemblies
- Any application requiring a tested, non-combustible firestop safing component
Packaging
- 3" x 4" x 48" strips (72 linear ft. per bag)
The above information is for reference only, kindly refer to the manufactures technical data sheet for more details. 
