This is our original fireplace mortar formulated especially to patch fireplace fireboxes and to bond firebrick to firebrick. Fireplace mortar is a silicate product that when fire cured, sets rock hard - as strong as firebrick itself and withstands 2000° Fahrenheit. Comes in a convenient cartridge for easy repointing of fireplace brick within the firebox. Colors match most mortars. Passes ASTM E136 and E72. 10.3 oz. cartridges.
- Grey colored fireplace mortar
- Perfect for repairing small chips or cracked firebrick, re-pointing mortar joints between firebricks, and bonding firebricks together
- Sets as hard and as strong as firebrick after curing
- Approximate Coverage: 99 feet with 1/8" bead.
- Rated to 2000°F (1090°C)