Preparing a painted wall for tiling - Tile Advice

[Hurstie]

Hi guys.
I’m after a bit of advice on how to prepare my kitchen wall for a splashback that I’m doing in 200x100 bevelled metro tile.
I battened and plasterboarded the wall and freshly skimmed it around 18 months ago. It’s also painted with Matt emulsion.

What are you opinions on how I should prep the wall? Sand down, scrape, key?
Thanks

 

[rasp]

Sand it down and then give it a coat of Bal SBR

 

[Dave]

Hi guys.
I’m after a bit of advice on how to prepare my kitchen wall for a splashback that I’m doing in 200x100 bevelled metro tile.
I battened and plasterboarded the wall and freshly skimmed it around 18 months ago. It’s also painted with Matt emulsion.

What are you opinions on how I should prep the wall? Sand down, scrape, key?
Thanks

Usually you can wash the emulsion off. Prime with suitable acrylic primer and tile with a c1 c2 adhesive

 

[Perfect Tiling]

I usually scrape the paint off with one of the wall scrapers you can get out of B an Q...with the tile tools. A very sharp angled blade....once you get it right it just lifts the paint off the plaster....or with plasterboard it takes off the top paper layer and paint. Prime as the others said and tile.