B
Bill
If it is a cloakroom type toilet then the light switch can stay.
If the tiles are ceramic, then you could skim over this plaster with finish plaster.
If the tiles are porcelain, I would hack off the plaster and dot and dab plasterboard on to the wall. No need to plaster skim the plasterboard that needs tiling.
If the tiles are ceramic, then you could skim over this plaster with finish plaster.
If the tiles are porcelain, I would hack off the plaster and dot and dab plasterboard on to the wall. No need to plaster skim the plasterboard that needs tiling.