Yeah, I've been meaning to research this--is it okay to store paper products in an insulated and vented but unheated/cooled attic? I've been experimenting with plastic, putting some of my empty collectible boxes up there (they are cardboard and plastic) to see how hot they get. Should I bag the papers before putting them in plastic bins? I used to do that when storing them in a barn, to guard against leaks, but I didn't have the heat issue there. Points to ponder...