Heat Stop 50 is the ideal high-temperature refractory mortar solution. This product is great for clay flue linings, firebricks, masonry ovens, interior and exterior chimneys, and fireplace applications.
This 50-pound bag of dry refractory is mixed with water to create 60 lbs of mortar. It will lay up to 100x 2-1/2″ thick bricks with joints of 1/16 to 1/8″ thick and can accommodate joints up to 1/2″ thick.
Good for mortared joints up to 1/2″ thick
This refractory mortar meets the standards of ASTM C-199, ASTM C-1283, ASTM E-136, and the NFPA-211 residential building code.
Handles extremely high temperatures, more than 2,000 degrees.
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50 lb Bags sold individually
