We have a storage building where we store old cars, tractors, and our motorhome. One thing is that in cold storage most folks do not want a cement floor. It condenses moisture from the air which then collects on frames. We have a floor of crushed stone.
Our motorhome is closed up tight inside the building. The building has exhaust vents that let wet or dry air flow through, but I try to keep the inside of the coach dry. If it does get wet inside I run the furnace for a while and dry it out.
I have seen coaches that had too much moisture trapped inside and the cabinets swelled up and joints broke. Try to keep it dry.
Retired FAA ATC, VFW, LEGION, NRA (Life Member)
2002 Journey D L 36, 2013 Demco KarKaddy III,
Toad 2012 VW Passat Diesel
Lost little Bitzy
New kitty named Oreo.