Mosaic backer sheets.
I'm a qualified Tiler and had heard a lot about these sheets, so thought I'd give them a go on a mosaic job I had. Unfortunately the mosaics came away from the sheets after setting the mosaics to the wall. I had to take them down and remove these sheets. I tried to back butter the the mosaics with the sheets on, but with varying results. My advice to people is that if you have a particularly heavy mosaic to set, then just cut the sheets in half. This will help greatly. Most adhesive will hold any mosaic in place. Don't use ready mixed adhesive too. Mapei Keraflex maxi S1 will see you alright.
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