Using Steel Studs and Concrete Board Over Masonry Brick Fireplace
The masonry front brick facing can be removed and replaced with non-combustible materials such as steel studs and concrete board/dura rock/micor
board as per diagram 1, only if safe to do so. Steel stud may also be placed in front of the masonry brick if left in place. This is the preferred method
depending on the condition of the masonry brick fireplace.
The opening between the front of the masonry firebox and non-combustible materials such as steel studs must be sealed so heat cannot run between the
face of the masonry fireplace and the refacing materials. Only finishing materials such as tile, stone, brick, or similar materials that are non-combustible
may be used. Use materials that are uniform so that when the unit is positioned, there are no visible gaps on the sides or top of the surround.