How do I know how much loose-fill insulation to buy to insulate my atttic?
First measure the attic floor area, and then divide that by 1,000. For example, if the dimensions are 30’ x 40’, or 1,200 square feet, you divide that number by 1,000 and get 1.2. The label on the bag of insulation will tell you how many bags you need to cover 1,000 square feet. Multiply that number by 1.2.
