In his book The Backyard Beekeeper, Kim Flottum suggests storing supers on a simple rack outdoors. The rack has a roof to protect the supers from rain, but no walls. The idea is to store the supers to allow light and air in, and discourage wax moths.
Has anyone tried this method? Are there any drawbacks? Indoor storage space is increasingly limited for me, and this would be a very cheap way of adding storage space.