If this is seen the backerboard needs to be replaced.
Replacing shower tile.
Remove damaged tiles together with tile adhesive cement under tiles.
This seems obvious but outside in works best.
You may have to break the tile into small.
Tiling the floor center one tile over top of the drain and lay it flat without adhesive.
Have a professional install a shower membrane and shower pan appropriate for the space.
Install a moisture barrier paper or plastic sheeting over the studs.
Old tiles should be removed from the area.
Check if any of the tiles you re replacing intersect.
Lift all of the tiles except the one.
Continue laying tiles from the drain outward.
Once demolition of the old tile is complete install a cement backer board in the shower area image 1.
If your shower is as old as mine you might even.
How to demo a tiled shower effectively and quickly.
In our project the shower pan is poured concrete image 2.
Mark the shower tile layout.
Get some ceramic tile adhesive or thinset tile.
Inspect under the tiles that were removed for signs of moisture that may have reached the backerboard.
X expert source art.
So i laid down some old sheets and taped up the edges with.
Remove drywall where the new tile will go.
You may have to repair rubber or vinyl membranes to.
Replacing shower or wall tiles 1.
In my case i wanted to keep the tub.
Cover your workspace and drains with a drop cloth to prevent any damage.
Install a cement board matching the existing drywall thickness.
Inspection of leaks should also be done at this stage so that proper plumbing may be done before the actual tile work.
Measure the distance from the last full sized tile to the wall and subtract the width of the spacer twice to determine.
Make sure any waterproof membrane is undamaged before proceeding.