Can you tile over paint stains? Will it stick?

[MickyB]

I'll soon be tiling a couple of small walls in the kitchen. I painted the wallpaper a while ago and got some white, thin paint spots where the tiling is supposed to go. Clumsy of me, but now they're there. I've tried scraping and washing them off, but they're pretty stubborn. Can I tile over it anyway? Will it adhere well enough?

Thanks in advance.

 

[Kardan79]

About to tile a couple of small walls in the kitchen. Painted the wallpapers a while ago and there are some white, thin paint spots where the tiling will take place. Clumsy of me, but now they are there. Have tried scraping and washing them off but they're quite stubborn. Can I tile over it anyway? Will it adhere well enough?

Thanks in advance.

The small amount of paint on the concrete is not a problem.

 

[MickyB]

The small amount of paint that has come out on the concrete is not a problem.

Thanks for the answer. I thought I'd take the opportunity to ask another question if that's okay.

Do you need to prime concrete walls before applying the tile adhesive?

 

[Kardan79]

Thanks for the response. If it's okay, I'd like to ask another question.

Do you need to prime concrete walls before applying tile adhesive?

I've never done that (though I've only tiled on concrete twice, and that was over a countertop). Maybe someone else can share their experience.