Then rinse the wall with a water dampened.
Tile over plaster walls.
This was back in the 80 s.
If you re not sure if you have lead paint test kits are available.
That is true you cannot tile over plaster if that s your plan.
Mix degreasing cleaner with water in a bucket using a dilution recommended by the cleaner manufacturer.
Layer newspaper on the floor across the bottom of the tiled wall.
Testing the wall for durability.
I have repaired tile jobs that were over 20 years old that the tile was applied directly to regular sheetrock and plaster walls.
Follow manufacturer instructions to a tee.
Don t use paint glue pva wall paper paste only use the primer recommended by the adhesive manufacturer of your chosen tile adhesive.
The problem otherwise is that grout is porous and any slight crack will cause moisture and mold on any other surface.
Or flatten walls with a latex modified skim coat product.
If plaster is any way compromised you should tear out to studs and start over.
Can you lay tile on plaster walls.
Mold does not grow on cement.
Loose paint must be scraped.
But with cement board.
Not all plaster wall surfaces will support the tile properly.
Also now it s been plastered you will be restricting yourself to a tile with a max weight of about 16 kg m2.
However tiling over tile can add quite a bit of thickness so make sure your wall can handle the weight.
Bring plumbing to code.
You would have to remove the plaster and replace it not with drywall run from a contractor who says that.
Scrub the wall tiles with diluted degreasing cleaner and a nylon scrub brush.
Add a diverter and shower line in the wall.
Adhesive grout and tile 20kg max weight onto plaster.
Cover with cement board tape off.
You may tile over existing tile painted or unpainted drywall plaster and textured walls.