Hi,I am planning a bathroom refurb. The bathroom currently has mdf style panels on all the walls, they seem to be about 8mm thick and have a few metal strip joints (about one or two on each wall. I'm planning on tiling the room. Do you think I could tile directly onto the existing panels? Will adhesive stick to the glossy surface? Will the metal joints (that sit 1-2mm proud of surface) cause any issues in terms of quality of finish?