In article ,
Vir Campestris wrote:
Some years ago we found out that the builder had painted the wall, then
tiled it. We found out when the top row of tiles fell off one day, and
one landed on its corner going through the bottom of the bath. Tiles
don't stick to emulsion either!

They do just fine if the emulsion was applied correctly. With a thinned
coat as a primer. And you use a suitable tile adhesive.

Tiling direct to plaster without sealing it first may not give the best
results either.

--
*On the seventh day He brewed beer *

Dave Plowman London SW
To e-mail, change noise into sound.