We need to replace our kitchen floor tiles. For some unknown reason the floor has become very uneven on one side. We have wheels on our chairs and they go rolling down hill when you set in them. Hubby went under house to see if he could find a cause.. and could see no problem in that area. We have some spots where the floor joist are pushing up.. He figures he could shave them down some and fix that problem. But the other problem we can't seem to figure out what to do with it. Would a floating floor help?