Looks like he is in a campground. Did he buy it sitting there? If so, it survived until he purchased it without that "wrap". He cannot even get in easily to inspect occasionally!
He has built a perfect spot for all kinds of bugs and spiders to survive the winter. Mice, snakes, raccoons, opossums, squirrels, skunks will love it under and in the trailer.
As stated, mold/mildew factory.
2001 Ford F-350 Super Duty CC Dually, 7.3 Diesel
2011 Cedar Creek 36CKTS Touring Edition
Full body paint, Cummins Onan 5500LP, Andersen Ultimate Hitch
We were on the road to ALASKA May 6, home Sept. 13, 2016. 23 states, 3 Canadian Provinces, up to the Arctic Circle, 17,300 miles, 131 days on the road. 1 flat tire, 4 oil changes. What a beautiful trip!