I finished the room addition (dubbed "The Swankitorium") for my Kampereen and took it out for a test camp last night. It worked great!

The finished space is 4 feet wide and 5 feet long. These dimensions were determined by the width of the camper and the off-the-bolt width of the material that I could use without having to join panels together in the floor. The height is 75 inches to match the height of the zipper on the camper.

I put large zippered, screened windows in the left and rear and a small one in the door. The floor is Shelter Rite which I like because it's a marine vinyl that has a little more rubbery/flexy feel than some. And it's thick. The roof is Weblon Regatta, the roof material I used on the camper.

My camper just has a sleeping berth, so it felt super luxurious to have this extra covered, screened space to stash my gear and chair at night, get undressed standing up and to have a spot to tuck the Porta Potty. Perhaps it should have been named the Poopitorium.