Cellulose

Cellulose blown-in ceiling insulation is a good choice for DIYers. Blown in cellulose has a higher R-rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts. Blown in cellulose is an environmentally friendly material made from recycled newspaper, so it’s easier on your skin and lungs. And you can blow it easily and quickly into odd-shaped spaces in an attic, where access is limited and dragging up batts is tough.

The recommended ceiling insulation level for most attics is R-38 (or about 12 to 15 in. from the drywall, depending on the insulation type). In the coldest climates, insulating up to R-49 is recommended.