I have hideous 4.25" ceramic wall tiles from the floor to 4' high around my bathroom. I want them gone, but I'm not psyched about the cost, mess and effort of removing them all and retiling. Here's my plan: Mount a 1x4" horizontally, flat against the top row of tiles. Then add 1x2" mounting strips horizontally across the surface of the tiles, in the middle and along the floor. Then nail panelling to the strips, and mount another 1x4" flat on the top as a sort of gallery shelf/trim piece. If well sealed and painted with an appropriate bathoom paint, is there any reason this wouldn't work, or shouldn't be done? My main concern is how thick the total application would end up being, since the tiles themselves appear to be attached to 1/2" cement board placed against the original plaster walls. With the cement board, tiles, mounting strips and paneling, it would be ~ 2.5" from the surface of the panel to the surface of the wall. Any thoughts on this approach?