We are hopefully going to get a new roof in the near future, and I'm wondering if we should leave the attic unvented like it is. I mean it has the original gable vents, but does not have a ridge vent or soffit vents. The previous owners had central ac installed in 2005, and I've read that maybe I should spray-foam the rafters and make it a conditioned space so it takes the load of the AC in the summer. I added 9 inches of fiberglass insulation over the older insulation on the floor two years ago. I know I would have to cover the existing gable end vents with plywood to make it truly unvented.
I guess my question is, should be stick with an unvented attic since we have the Air handler and duct work in the attic?