Furnace Cement – Fireplace Mortar


  • Tan and gray color available.
  • Ready mixed.
  • For use in a caulking gun.
  • 10.3 fl. oz.
  • Made in USA.


Furnace Cement – Fireplace Mortar

Gray Furnace Cement and Fireplace Mortar
Gray Furnace Cement Fireplace Mortar

Furnace Cement – Fireplace Mortar is a high temperature silicate cement for furnaces, stoves, and fireplaces. It can be used to cement and re-set firebrick and cement gasketing in place. Furnace Cement – Fireplace Mortar can patch, repair or repoint mortar joints. Use it to fill and seal dangerous cracks in wood stoves and chimney collars. Furnace Cement and Fireplace Mortar is formulated to withstand temperatures up to 2000 degrees Fahrenheit.

To use Furnace Cement and Fireplace Mortar: clean your working area of all dirt, soot, grease, oil and crumbling brick. Cut caulking tube tip to desired opening size. Dampen area lightly with water and apply cement. Smooth with a spatula. Allow 24 hours dry time before subjecting to high heat. Soap and water cleanup. For interior use only.

Also available in tan and gray color.

Furnace Cement – Fireplace Mortar

Additional information

Weight 2 lbs
Dimensions 12 × 2 × 2 in

Contains sodium silicate. Product is alkaline. Avoid contact with eyes and skin by wearing safety glasses and waterproof gloves. Wash thoroughly after handling. In case of eye contact flush with plenty of water for at least 15 minutes. Consult a physician immediately. Keep out of reach of children.

Mortar Color