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I just had my handyman put a new subfoor in my bathroom. 3/4" plywood and then the cement board. I'm putting in a heated floor element and probably ceramic tile.
The problem is when I step on an area the is a "creak" as if the floor is moving or the plywood is sliding against a nail or something. Although I don't really feel it move.
I don't recall him using any adhesive between the plywood and backer board. Now what should I do?
My handyman seems to think it will be stable once the electric heat element is set in a layer of "cement" and then the tile.
Thanks, I obviously need qualified help.