Hi

Existing bathroom floor is 18mm chipboard and is in a poor condition - at
least three access holes have been cut into it. Since the bathroom is to be
gutted and sanitary ware moved it seams pointless not to replace the whole
floor. SHMBO wants ceramic tiles. Would I be able to tile directly onto
an 18mm plywood floor. If yes then help please on grade/type of plywood and
securing to joists etc.

Thanks

PeterK