3M Fire Barrier Mortar

A cost-effective lightweight, cementitious firestop with variable mix ratios for use in through penetration applications. Up to 3-hour fire protection in tested and listed systems. Off-white with dark flecks, ready for mixing with potable water.
When properly installed, this product helps prevent the spread of fire, smoke and noxious gases.


  • Firestop tested in accordance with AS1530.4 and ASTM E 814 (UL 1479)
  • UL-listed systems
  • Excellent adhesion (bonds to concrete, metals, wood, plastic and cable jacketing)
  • Halogen-free formula
  • Water clean up