I'm working on a bid for a remodel job that involves among other things, tearing out and replacing ceramic tile floor. The tile that is on the floor now was installed by the H/O when the house was built. He says there is no backing board under the tile and it was glued down to the sub floor with a flooring adhesive instead of thin set. What are the chances that this stuff will come up without taking the top off of the sub floor? My first thought is to try to talk the H/O out of replacing the tile. There is nothing wrong with it except she's just ready for a change. My second thought is that if the tiles aren't loose, popping up etc. that they are probably stuck pretty good but I wouldn't know that until I try to bust it up. I've asked a couple of flooring contractors about it and no one wants to touch it. Anybody ever ran into anything like this?