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Refractory panel mortar- anyone used?

Posted on 11/3/25 at 3:02 pm
Posted by Riseupfromtherubble
You'll Never Walk Alone
Member since Jun 2011
39480 posts
Posted on 11/3/25 at 3:02 pm
My wife and I bought a house last year with a wood burning fire place, but one of the refractory panels has a substantial crack in it.

The fireplace/panel is discontinued, but I can buy one that's pretty similar in size for ~$200. Before going that route I was curious if anyone has had luck with the high heat masonry mortar and repairing something like this. TIA
Posted by AaronDeTiger
baton rouge
Member since Jun 2014
2148 posts
Posted on 11/3/25 at 4:05 pm to
I do refractory in oil refineries. It'll probably just crack again. How bad is the crack? Separated more than 1/8"?
Posted by Spankum
Miss-sippi
Member since Jan 2007
60179 posts
Posted on 11/3/25 at 5:39 pm to
quote:

the high heat masonry mortar and repairing something like this.


I had some cracking of the fire bricks in the back of my fireplace and used something I got from Lowes thst came in paste form in a tube to be applied with a caulking gun. Clean it well and it will hold up pretty well.
This post was edited on 11/3/25 at 5:43 pm
Posted by Riseupfromtherubble
You'll Never Walk Alone
Member since Jun 2011
39480 posts
Posted on 11/3/25 at 6:30 pm to
That’s what I’m looking at, and yea it’s a bad crack. Might fall apart when I pull the panel
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