I am trying to create a room with a sloping ceiling. I succeeded in creating the sloping ceiling, but because the room has a sleeping loft I am creating it with 2 floors. I created the first floor with a room for the sloping ceiling, one for the loft and one for the room itself for the flooring. After that when I add the second floor the sloping ceiling isn't sloping anymore, but flips up horizontally. Is there something I can do to keep the ceiling sloping? Or can I create the loft in another way?