Local Knowledge About Loose-Fill Insulation

Loose-fill insulation consists of loose fibers or granules, and is made from cellulose, fiberglass, rock wool, cotton, or other materials. This loose insulation conforms to the space in which it is installed. Loose-fill insulation comes in bags, and is usually blown into cavities or attics with special equipment. Insulation is sometimes blown at relatively high density into a wall or ceiling cavity to resist air infiltration--this technique is called dense-pack.