I have a diagonal subfloor of 4" fir planks over 2x8 joist, 16" on center. On top of this there 3/8" plywood with lino glued on that. The toilet flange is resting on top the plywood at the moment. How do I remove the flange so I can remove the plywood and what is recommended for underlament to prepare the floor for ceramic tiles. Thanks!
How to remove your toilet flange depends on what it is made of and how it is attached. Is it PVC, ABS, brass/lead, etc?
In a nutshell, once the linoleum is removed you'll apply 1/4" cement backerboard in a bed of grooved thinset right over the plywood. You'll also screw it down with backerboard screws. The seams of the backerboard must be mudded with thinset and taped with fiberglass backerboard tape. You then apply the tiles to the backerboard with thinset.