"Russ" wrote in message
...
We have just made a frame and plywood base for a stone resin shower tray.
A
small note says lay it on a weak bed of motar but thats the only info.
Any
idea of motar mix and how thick it should be. Any other tips would be
useful


1:4 cement to sand, mixed semi dry .. i.e. if you crush a handfull it
retains shape and water does not squeeze out.

Remember you are NOT sticking it down, only providing full support
underneath.

I used about a 3/8" (10mm) bed when I did my trays, shuffled the trays left
to right to settle in.

Rick