If your tiles are in mortar break open a.
Shower wall tile and joint with dry wall.
The bottom line is that drywall and this includes moisture resistant drywall should never be used behind tile in wet areas showers and tub shower combinations.
In areas of high moisture such as walls in a shower for long term durability it is not advised to install tile over drywall even if the drywall is type mr moisture resistant.
Tub or shower surrounds require routine care to keep grout joints waterproof and seams between tile and shower base or tub sealed with caulk.
If the tiles are mounted on drywall the moisture will eventually turn the drywall to a messy mush.
At some point along the wall the cement backer board will meet with the drywall used in the rest of the room.
If you have a larger area break the tiles with a hammer and chisel or sledgehammer to get them off the drywall then unscrew and pull down the old panels.
But that doesn t mean you ll have to tear all the tiles off the wall and replace them.
Furthermore blueboard is not difficult to install.
This joint needs to be flush and smooth in order for the tile or other wall covering to be installed correctly and to create a professional finished appearance.
It will be fine to tile over drywall in low moisture areas such as tiling around a fireplace.