Originally posted by The Home Care Club LLC:
Is is a concrete wall or is it a mud wall that someone else has taken off the tile from?
If its a mud wall and not a concrete wall simply tile right over it.
If its a cement wall, you do not need any tile board but I would use Kerdi Mat on the walls to water proof them and you should be good to go.
Visit their web site at
http://www.schluter.com/ to find out more about their products/
