Morning I'm planning on tiling the shower area with small porcelain mosaic tiles (several on backing sheet). I have plastered walls so unsure how to treat/prepare the plaster prior to applying waterproof adhesive and tiles. Is their a sealant for this or do I use something like PVA?. Appreciate advice. Many thanks.
You must like cleaning. All those grout lines to keep sparkling! Small mosaics really are a b'stad to keep clean in a shower. If you insist on doing this use a shower tanking kit on the walls first.