CELLULOSE INSULATION IS...
...is a building insulation material used to fill empty spaces or as a blanket over the attic to slow down heat loss.
Cellulose insulation is ground up recycled newspaper that has been treated with pest and fire retardants. Cellulose can be blown into spaces either as loose-fill or dense packed material. When installed as a dense pack, it is also an air barrier which is ideally suited for older homes where access can be an issue.
This greatly reduces the heat transfer and air flow and thus the comfort and energy efficiency of your home.