Make sure you ve filled in all the grooves and any openings on your existing surface.
Tiling over existing shower wall tile.
Typically screws secure each of these items in.
This will guarantee your tiles to stick over pretty much anything.
My fil uses and recommends laticrete 272 mortar mixed with 333 additive.
This essentially means laying a new layer of tiles over the old layer.
Then rinse the wall with a water dampened.
Scratch the tile with sandpaper to rough up the surface.
Most people dread re tiling because it often means that you need to remove all the old tiles first.
Instead of removing the old tiles you can often update them by tiling over tiles.
The proper way to tile over a fiberglass shower pan is to remove the pan.
This isn t especially problematic if the pan was installed separately from the shower walls but it can be tricky if the pan is part of a one piece fiberglass stall and it may need professional expertise.
This assumes that the floor underneath is solid concrete and that there are no cracks in the existing tile indicating underlying problems in the concrete.
If your old ceramic tile is worn or dated you can lay new tile right over the old and avoid the huge job of tearing out the old tile.
Remove the faucet handle face plate spout and shower head.
Layer newspaper on the floor across the bottom of the tiled wall.
But this isn t always the case.
How to install a shower surround over existing tiles step 1.
Scrub the wall tiles with diluted degreasing cleaner and a nylon scrub brush.
Skim coat over your existing tile.