Imperial 10.3 Fl. Oz. Grey Hi-Temp Stove & Fireplace Mortar

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  • Use for repairing cracked and chipped firebrick and tuck pointing mortar into damaged masonry-to-masonry joints where cracks are 1/4” or less
  • Non-asbestos
  • Spreads easily, superior bonding strength
  • Durable as firebrick when heat cured
  • Resists temperatures up to 1093°C (2000°F)


  • Clear all dirt, dust and debris from the area to be repaired. Lightly dampen the surface area with water. Cut nozzle for desired bead size at a 45° angle. Using a caulking gun, apply by pushing mortar ahead of nozzle. Fill the crack or hole and smooth with a trowel. Clean up spills immediately after use. Air dry for 24 hours then heat gradually when first starting fire.
  • Not for exterior use.


  • MAY IRRITATE EYES. MAY IRRITATE SKIN. Do not get in eyes. Do not get on skin or clothing. Keep out of reach of children.

First Aid Treatment

  • Contains Sodium Silicate. If swallowed, call a Poison Control Center or doctor immediately. Do not induce vomiting. If in eyes, rinse with water for 15 minutes. If on skin, rinse well with water.


  • Use for stoves and fireplaces. Used to re-point mortar joints in a firebox. Meets ASTM E136-79 flammability test.


Model KK0067-A
Product Type Stove & Fireplace Mortar GREY
Volume US 10.3 fl. oz.


Safety Information: See CA Prop 65 Warning for more information.