I got a bit trigger happy with my sds chisel and chiselled out more than the 22mm brick I needed to. There is a gap of about 20mm in some areas which makes it difficult to screw the 47mm electrical box to the brick.
Could I use some bonding plaster and carefully screw the box in to that once it sets?
Could I use some bonding plaster and carefully screw the box in to that once it sets?