Cracked Fire Brick

[Jim Robinson]

I know it's not brick. I just don't know what it is supposed to be called. I see this pretty often. Do you folks call out for it to be replaced?

[Nick Ostrowski]

I call them refractory brick panels and rarely see a fireplace that has them where at least 1 of the panels is not broken.

[Jim Luttrall]

No replacement unless it is not staying in place.
Wider cracks or chunks missing or falling of, yes, replace it.

[Mark Reinmiller]

I do not call for replacement with cracks like that. In fact, some manufacturer's instructions even state that small cracks are typical and not a problem (my wording, not theirs).

[Roy Lewis]

High temp fireplace sealant.

- - - Updated - - -

High temp fireplace sealant.

[Stephen Tilleux]

I know it's not brick. I just don't know what it is supposed to be called. I see this pretty often. Do you folks call out for it to be replaced?

Firebox liners are what most Mfg call them. Patching the crack can be done but likely will fall out in a season or two and won't match the color. Also for the inspectors, most of the non Mfg replacement panels are only 1" thick vs 1 1/2" or 2" for some fireplaces.