i have to agree with geckoxp, you must have it super humid in that room. my grandmother used to live a half hour south of atlanta. every time we went for a visit it was 90% humidity. i found it oppressive, and wanted to find a cave to hide in. i guess old people dig heat and humidity. but she never had any moisture issues(at the time i was working as a house painter and would have noticed). but if i were you i would mount somthing to the wall. a couple of full sized sheets of plexi or somthing like that to protect the walls. that way your cage doesn't accumulate more unsightly hardware.
good luck! i'm curious to see how this gets resolved.