Can I put 1/4" backer board over drywall?
I am tiling my bathroom walls, and I am trying to decide how to prep the walls for tile in the area not around the shower. It is currently wallpapered drywall. Can I put 1/4" backer board over the drywall? Or should I just tear it all out and put up 1/2" backer board? I've seen that some people tile right over dry wall, but I don't want to deal with removing the wallpaper.