A homeowner in Azle called us out after noticing cracks opening up inside the firebox. On inspection, the refractory panels had failed: a split ran the full height of the corner joint, a second crack crossed the back wall, and the lower courses showed heat staining and surface loss from years of use.
Cracked panels are not cosmetic. The panel is what stands between the fire and the structure behind it, so once it splits, heat reaches material that was never meant to take it. We replaced the set rather than patching it.
What Refractory Panels Do
Refractory panels line the back and sides of a firebox. They reflect heat back into the room and, more importantly, protect the surrounding structure from direct exposure to fire. A sound panel set is a requirement for the firebox to pass a Level 1 inspection.
What We Found and What We Replaced
The corner joint had opened top to bottom, which is the most common failure point because the joint carries movement from two directions. The back wall had cracked horizontally about two courses up. Both are past the point where a repair compound is appropriate.
We removed the failed panels, checked the structure behind them, and fitted a new panel set cut to the firebox dimensions. The screen curtains were refitted and the lintel left in place. The firebox is back in service and safe to burn.
