Recent content by PotterD

There are no metal studs. There are wood studs flanking the fireplace and a header above. You can see where the backer screws are driven in.

There is no cracking problem at the joints, just above the door where it has gotten hotter.

This extends from directly above the door to the underside of the mantel.

For an older Bis woodburning fireplace I have attached 1/4 hardie backer surround. It is loose against the fireplace sheet metal but secured to studs on both sides. While deciding on tiles, a hairline crack developed over the door of the fireplace. I filled with thinset (mapei ultraflex) and...