I recently bought a house in the Birmingham Al area and have a question about insulation. The house has a basement/garage and over 50% of the walls are exposed(steep hills). Would it be beneficial to insulate the ceiling of the garage/basement to help with heating and cooling? The floor are hardwood and I've noticed it's cool inside my garage when I get out of my car in the afternoons but once I walk upstairs into the living area I notice its definitely warmer than the garage. I think a lot of the cooler air is dropping from the living area into the basement and causing the air conditioner to run all day.