DIY Energy Audit part 9: Air Sealing in the Attic

For the simple reason that heat rises, insulating the attic is a major energy saving measure. But if the heated air in your house is just slipping through the cracks in your ceiling and passing through your insulation, well, that insulation isn't worth too much. (In case you didn't know, most insulation materials don't stop drafts. They only work with still air)