I'm in the process of gutting a small house for my in-laws, and need advice on removing a tiled floor. At some point in the last 15 to 20 years, some genius laid inch-thick particle board over linoleum, then tiled on top of the particle board. It does not appear the particle board is free floating, it looks like it is both glued and screwed into place. And only a portion of the house, what was the kitchen and small living room, was done like this, about 250 ft² in total. We want to reconfigure the house, so we need to make the floor level. Any suggestions on how to remove the tile/particle board without serious damage to the sub flooring? I don't care about the lino, but do so about what's underneath it. Is there a specific tool that might make things easier? A crow bar takes bite size pieces only, so I'm wondering if a wrecking bar with a wide spade would speed things up. I just see something like that getting hung up in the lino and possibly damaging underneath.