Quote Originally Posted by Andrew Franklin View Post
Crazy question...rather than a blanket and bricks to insulate a 2x4 arch, I see refractory cement is castable and not too expensive. In theory could someone just use the cement on the base and up the walls eliminating the need for bricks and blanket/board? Wondering if it would hold up to the wood and if it insulates as well. Just curious...
Hey Andrew:
In my younger years I worked on boilers we used cast able cement (was called M-48 asbestos cement) over the brickwork to give it all a smooth surface I do remember laying in the sooty fire tube repairing cracks in that every year in our boilers..............just for your information. jay