Fixing glass mosaic tiles behind wall mounted wc

[opticsman]

I am fitting a wall mounted wc and want to use 20mm square glass mosaic tiles (OriginalStyle) between the porcelain bowl and the wall. As these tiles are very fragile I believe I need to use some form of offset spacer. The bearing surface of the bowl (apart from where the fixing bolts pass through) is in the form of a thin edge rim - can anyone advise any tried and tested techniques?

[GazTech]

Try the stick on draught excluder foam type, like you see around doors and windows....this will offer some cushion between surfaces......Gaz

[brian c]

what about silicone!