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3M Fire Barrier Mortar

Lightweight, gypsum-based and endothermic fire stop that is ready for mixing with potable water.

  • Up to 2-hour fire ratings per EN-1366-3
  • Variable mix ratio permits self-leveling as well as trowelable application
    consistencies including concrete floors with 100 mm minimum thickness
  • Excellent adhesion – bonds to concrete, metals, wood, plastic, and cable jacketing
  • Re-enterable/repairable with common trade tools
  • Acts as a heat sink, reducing the likelihood of combustible matter igniting on the
    unexposed side of the assembly
  • Dry mix available in 18.9 litre (12.7 kg) pails and 19.9 kg bags