step one was removing all the metal brackets in the cube..
than found some really thick and cool "coin" rubber flooring that was cut and placed over the whole floor. I know Home Depot sells a diamond plate rubber floor, but I saw this is a NASCAR rig and liked the looks.
I than installed the ceiling in the lounge area with a 1/2" insulation board under the sheet of shinny white plastic board. Than we build the rough wall in place bolted to the floor and screwed to the walls and ceiling.
I used 2x3 for the walls thinking that extra 1" of room would help..each wall was bolted to the floor, screwed to the walls and ceiling. I than tied the corners together with truss locks to help reduce twisting.