High Temperature Mortar Materials from Mutual Materials

Mutual Materials sold me Type S mortar and fireclay instead of the items I asked for. They said the Type S mortar had the other three items already blended. Are they correct?


HECK NO! That is incorrect!

I made a batch of High-temp mortar this weekend and got all the materials needed at Mutual Materials / Bellingham location (see pic below).

Type S is great for the edge brick around the hearth slab… but NOT as a high-temp mortar.

We’ve never received a complaint about this inexpensive and easy to make high-temperature mortar that is used the world over. But you have to make it correctly… so don’t deviate from the High-Temp Mortar recipe.

Plz let me know the branch location. I’ll send them a set of our Installation Instructions.