Originally Posted by oh'mike
Tell us what the old tile is set over---reusing the old backer is usually a nightmare---if set with cement based thinset the old cement board will be ruined--if set with a mastic--the old cement board will also be ruined.
If set over plywood---well--you need a tile backer if you want the safest job---
Pictures help--or a better description of what's there will do.
Ok cool...first level is plywood base, then some type of mortar to which cement board was attached along with screws, then thinset, then the tiles which are on a mesh backing.
Like i mentioned i can slide the chisel right under tiles and pop them off one by one with some force.
I want to know if I can leave the current cement board down and put new tiles on top after removing old poly-shaped tiles.