[strayllama]

I have 2 rows of 5 tiles to line the sink behind the tap. I was told at the tile shop that if the wall was 100% flat and they will have the weight taken up the sink and the first row then silicone sealant would be fine, then just seal the edges after.
Should I sand the painted wall above the sink first?

[creahands]

U can get a small tub of ceramic tile adhesive at a big box store. After tile sets grout.

If gloss paint, rough up surface with sand paper first.

Chuck

[strayllama]

Aah yes I understand that, but right now I have silicone and tiles and am snowed in my flat, is it fine to just use silicone sealant to stick them up, and grout them? I don't see any probs other than holding them in place while it sets - but they will have they're weight on the sink, so just some tape!

[ballengerb1]

That is not an accepted method to put down tiles. You can do it but it will not last as long as a proper job. Silicone is flexible and grout is rigid.