Where Is Refractory Mortar Used?
The simple answer would be chimneys and fireplaces. Using common sense, it's used anywhere that is exposed to very high temperatures. There have been failures in parts of the chimney and fireplace firebox because someone did not use the right kind of mortar for the application.
The National Fire Protection Association or NFPA is a self-funded nonprofit organization that was established in 1896. They recommend the use of tested, medium-duty refractory cement in the construction of fireplace fireboxes, in coating smoke chambers, and in the setting of clay flue liners. They also recommend cement and its agents be non-water-soluble and this is where calcium aluminate comes into play. The calcium aluminate binder will be set hydraulically which will meet the requirements. Without calcium aluminate, or something similar, someone will build a chimney, and even after it cures, it's exposed to moisture, so the joints will soften and wash out.
Heat Stop 50 Refractory Mortar
If you have a well-designed masonry fireplace or a bake oven, you will add value to your home along with charm and needed warmth in the winter months. Studies have shown that masonry fireplaces are no the top of the list among home buyers. If you are considering adding a fireplace to your home, you need to ensure it's designed and installed properly. The concrete masonry industry has offered an easy-to-follow guide to help you out.
These instructions have been contributed by engineers, manufacturers, contractors, building code officials, and technical agencies. If you follow their instructions and advice, you can have a safe, quality outcome that is compliant with local and national building codes. Always check with your local code enforcement before starting construction.