Thanks. I've read in flooring that you could, but will investigate somemore. Thanks. My heart is very sad if this is true.!!!! I posted something on the flooring sections. No replies yet, maybe no one wants to tell me the bad news?
It can be done( as per Schulter) if the joists are the correct size, the space between them is appropriate, the span isn't too long, the subflooring flooring is plywood(glued and screwed) and covered by something like Schulter Ditra.
Personally, I like 2 layers of ply, glued and screwed with a layer of cement board, thinsetted and screwed.
I'm a romantic.