Are we supposed to do anything to maintain attics? My house is only 3 years old and I went up in the attic today (after never having gone up there) and noticed there were already black mold spots on the plywood making up the roof of the attic There's no leaking from the roof, so I assume it's a humidity issue. My brother in law is a there's already standard stuff like vents, etc in the attic, and they're not blocked, so I don't know what else I'm supposed to do? He says maybe because it's a small house, humidity tends to be more of an issue. I don't really want to just sit by and watch my house slowly decay, but I don't know what can be done to prevent this stuff from happening. Damn, I miss renting!!