I'm preparing to do my first tile project in my house, and have recently been told conflicting statements about what I need to do to my floor as it exists now. I'm going to tile the floors in my kitchen, entry way, and bathroom. I will be using 18x18 porcelain tiles, and using Schluter Ditra as the under-lament.
Each of these floors are currently linoleum. As far as I can tell, under the linoleum is some sort of particle board, and underneath that should be the bare floorboards. It is/was my understanding that I needed to rip out the linoleum, have a decently clean surface, and then use thin-set to bond the Schluter Ditra down. It also is/was my understanding that you could also leave the linoleum down if you desired, but that you had to nail it down every so many feet.
My problem is now I've been told that I also need to take out the particle board layer that is underneath the linoleum. I'd prefer not to have to do this, as I'm sure I will have to cut it out around my counters, and around the areas where linoleum stops and carpet begins. I'm not entirely comfortable with the idea of having to make "precision" cuts only deep enough to cut the particle board, but not the floor board.
So I'm not sure what to believe. I thought Schluter Ditra would do just fine on top of the particle board, and possibly even on top of the linoleum. Boiled down to a very simple question, what can I safely put Schluter Ditra on top of?