Keeping the insulation in an attic is important. We provide free attic insulation dams with each complete insulation package. What does this mean? Well, in most cases, we build a very rugged attic hatch extension, typically 10-12 inches above the existing attic. This allows us to fill up to 18 inches of insulation all the way to the hatch. This minimizes areas where this is not enough insulation in the attic.