Help needed for mosaics

[Italy]

Checked source web site does say can be use in wet areas not sure weather need different adhesive ? Thanks for other advice on back board

an epoxy adhesive helps keep the water out.
more than this I do not know what to say, I'm sorry

 

[Steve Cousens]

Had thought of in shower area only doing normal tiles leaving gap for mosaics the fitting thin cement board making sure no gaps then mosaic on top ? Mmm might be talking her out out shower area maybe better shout around bath be ok as it’s 300mm upto border .