When we took off the ceiling and walls we found why we froze during our camp out... no insulation. We were told this was a standard thing..... yea we were told so many stories I thought we were at Disneyland. Well this was fun installing this and most I did on my hubby's double day. I used every little piece. Oh did I mention our ribs and bones don't go to the floor or ceiling..... they are just glued there.