ROXUL SAFE® Fire Resistant Insulation

ROXUL SAFE® together with CURTAINROCK® 40/80 provides a comprehensive critical line of defense in fire protection that has been UL/ULC tested and approved for perimeter fire containment.


This product is designed for commercial, industrial, and residential buildings as a fire stopping insulation. Ideal for filling:

  • Perimeter gaps between concrete floor slabs and exterior wall systems
  • Around conduit pipe and duct openings through walls and floor slabs
  • Between fire walls and ceiling slabs

ROXUL SAFE® is used in conjunction with a fire sealant to prevent passage of fire and smoke.


  • Non-combustible stone wool insulation with melting point of approx. 1177°C (2150°F)
  • Does not promote smoke or flame spread when exposed to flame
  • Minimal shrinkage to maintain critical line of defense against fire
  • Low thermal conductivity
  • Water and moisture resistant; does not absorb moisture to maintain insulating value
  • Does not rot, promote mildew, fungi, or bacteria
  • Can be faced with reinforced foil facings
  • ROXUL can contribute to earning LEED® points