Does attic ventilation really help. I'm in the Deep South USA. I've got two gables north/south that have large openings. If I install gable fans, should I try to cover the rear of the opening? Good sealing is probably a waste of effort because the rest of the attic has leaks at the fascia board. 110 year old miscellaneous Victorian. Should I configure them to both exhaust or to provide cross ventilation? via /r/DIY http://ift.tt/2oczisO
