When blown in cellulose gets into some of the tight corners and hard to reach areas in the attic cavities.
Pros and cons of cellulose attic insulation.
Cellulose is very inexpensive when it comes to attic projects in comparison to other materials.
If you choose to install cellulose yourself you can buy the insulation in bags from your local home improvement store.
Blown in fiberglass is considered flame resistant.
This type of insulation requires professional installation.
Installation projects can be very messy.
Blown in cellulose pros one aspect to consider is air infiltration and in that cellulose is the top choice due to its ability to form a dense mat that allows the air within the insulation to keep moving.
Most blown in cellulose materials are non toxic.
Blown in insulation flows down around wall studs.
Insulation efficiently fills gaps.
Boric acid borax or aluminum sulfate used in cellulose insulation provides resistance to mold pests and fire that can occur in the attic.
Materials can be layered for added protection.
If your attic has a lot of nooks and crannies your best bet may be to use loose fill insulation made of fiberglass or cellulose.
Cellulose has a higher r value and even does not lose the value in the extreme cold were fiberglass may.
When compared under the same conditions fiberglass insulation increases air tightness by 41 over an uninsulated building while cellulose insulation increases air tightness by 74.
Pros and cons of cellulose attic insulation cellulose recycled ground up paper with boric acid added for insect control and fire resistance offers a better attic insulation option than batts.