Hi, the woodburner installer cut out a section of plasterboard and replaced it (im guessing with heat resistant plasterboard) behind the woodburner, the problem I have is even after filling, sanding and painting the join between the new section of plasterboard and old the heat makes the board move slightly and I have a constant fine crack at the join location (pic attached)
can anyone suggest the best way to resolve this?
Thanks
can anyone suggest the best way to resolve this?
Thanks