How is Paper Shredded to Make Cellulose Insulation?
Why Use Cellulose Insulation? Cellulose insulation is generally made from recycled newspapers soaked in fire retardant. Cellulose insulation recycles paper, saves you money by helping keep energy costs down and works so you feel cooler in the summer and warmer in the winter. Turning Paper Into Insulation According to the Cellulose Insulation Manufacturers Association, it takes little energy to manufacture cellulose insulation compared to fiberglass and foam insulations. Newspapers are first chopped into small pieces that are about 1 inch square. These small pieces are then “fiberized” or broken down to individual fibers. The result is a low-density material that weighs about 1.5 lbs. per cubic foot. A lower density also means you will get better insulating value. Making It Fire Retardent Once the paper is shredded, it is treated with sodium borate, boric acid or ammonium sulfate. This does not fireproof the paper, but it makes it fire resistant. It also keeps the insects, rodents and m
