:welcome: Hi Pringle,
For the area that it is ceramic would be fine, but porcelain would be the stronger option if you are intending on throwing heavy objects about in your bathroom:lol:
That then leaves you to decide between glazed porcelain or solid body porcelain:yikes:basically the glazed option is made up of a porcelain biscuit with a decorative finish applied during the manufacturing process, whereas the solid body route gives the same decorative finish completely through the
tile - but is not really necessary in a domestic bathroom - probs better to go for a porcelain bodied
tile if you are looking at underfloor heating, but again not imperative.
In a nutshell because of the amount of heavy foot traffic your bathroom will get, i.e. not a lot!!, you can pretty much pick what you want:hurray: just try to make sure they are a decent thickness on the floor, over 8mm.
With regards to your marine ply, I would opt for the Hardie Backerboard option, which the lads in Topps will be able to supply you.
I've just started a thread in the '
Tile Adhesive, Grout and Preparation' section of this forum, which explains how to install it:hurray: