Heat Stop Refractory Mortar
The Professional Choice For Refractory Mortar!
Heat Stop (Premixed) & Heat Stop II (Dry Mix)
Heat Stop (premixed) and Heat Stop II (dry mix) are refractory mortars developed for installation of firebrick in masonry fireplace installations. These also have many other uses such as in chimneys, boilers, furnaces, kilns, etc. Heat Stop (premixed) refractory mortar is gray in color and sold in 15 lb. or 50 lb. plastic pails. Heat Stop II (dry mix) refractory mortar is also available in a 10 lb. pail or 50 lb. bag. For estimating purposes, 50 lbs. will lay up approximately 100 firebricks (2 ½” thick) if joint thickness is 1/16” - 1/8” as recommended. For Heat Stop II (dry mix), joint thickness up to 1/2” is acceptable.
Installation Tips: Be sure to mix both mortars with water as directed. If Heat Stop (premixed) becomes frozen, unfreeze and mix thoroughly. Heat Stop (premixed) is an air setting product, however may be water soluble in service. Do not use on exterior applications or where excessive moisture may be present. Use Heat Stop II (dry mix) where moisture is present as this product is non-water soluble. These mortars meet and exceed all local and national building codes and are good for applications well over 2000° F.
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Ratings & Reviews
Heat-Stop II Dry mix
by Mid Carolina Chimney Service
Love this mortar, easy to work with and good consistency.
<br>Will store on the trucks for when needed.
<br>Great Product from our friends at Lindemann