Tile Over Plaster Walls

Both painted and bare plaster allows for the installation of tile.

Tile over plaster walls.

You would have to remove the plaster and replace it not with drywall run from a contractor who says that. You may tile over existing tile painted or unpainted drywall plaster and textured walls. It used to be very common to put tile up on whatever the wall was and seal the the tile. Not all plaster wall surfaces will support the tile properly.

Don t use paint glue pva wall paper paste only use the primer recommended by the adhesive manufacturer of your chosen tile adhesive. Loose paint must be scraped. Layer newspaper on the floor across the bottom of the tiled wall. You should not tile over wallpaper glossy surfaces lead paint or plywood.

Or flatten walls with a latex modified skim coat product. Bring plumbing to code. Cover with cement board tape off. If you re not sure if you have lead paint test kits are available.

I have repaired tile jobs that were over 20 years old that the tile was applied directly to regular sheetrock and plaster walls. That is true you cannot tile over plaster if that s your plan. Adhesive grout and tile 20kg max weight onto plaster. Also now it s been plastered you will be restricting yourself to a tile with a max weight of about 16 kg m2.

Add a diverter and shower line in the wall. This was back in the 80 s. But with cement board. Testing the wall for durability.

Follow manufacturer instructions to a tee. Mix degreasing cleaner with water in a bucket using a dilution recommended by the cleaner manufacturer. If plaster is any way compromised you should tear out to studs and start over. Mold does not grow on cement.

However tiling over tile can add quite a bit of thickness so make sure your wall can handle the weight. The problem otherwise is that grout is porous and any slight crack will cause moisture and mold on any other surface.