I have just installed a rectangular Wedi shower tray (www.wedi.co.uk for
those not in the know) and am about ready to tile it with white ceramic
mosaic tiles.
I`ve done one before with large tiles and you basically have to cut the
tiles so there is a line from all four corners to the small square drain in
the middle. This is so the tiles don`t 'bridge' the valley from all four
corners to the drain and potentially break if stood on.
The mosaic tiles are 4.5cm by 4.5cm and appear to be small enough not to
need a line cutting from each corner to the drain in the middle. If so this
will make the job a hell of a lot easier.
Has anyone else had experience with tiling a shower tray with mosaic tiles
and what did you do?

Also, the tile adhesive I`m using (Dunlop waterproof ready mixed) doesn`t
recommend using it for the floor tiles. Why is this?, should I be using a
cement based adhesive for the shower floor? The Wedi tray itself has a
cement based surface so I presume the bond would be better?
Steve