Blown In Fiberglass Vs Cellulose Attic

By nature the cells inside the cellulose insulation have their own insulating power.

Blown in fiberglass vs cellulose attic.

Dry blown cellulose will characteristically settle and sag in place reducing its r value. According to research done at the oak ridge national lab fiberglass loses up to 50 of its r value in very cold conditions. More consistent pricing from cellulose manufacturers than fiberglass. Loose fill or blown cellulose insulation is manufactured primarily from recycled newspapers a very benign product so it poses virtually no ongoing health risk.

You can get to the same place with either material. Cellulose resists blowing when installed fiberglass tends to blow around stick to the attic ceiling and drift. Wet blown cellulose is also subject to similar contamination too. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic.

Advantages and disadvantages of fiberglass advantages. This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to. Blown fiberglass on the other hand is made up of very fine strands of glass and these tiny fibers are a carcinogen that can easily be inhaled into your lungs. It can still be done diy by renting a machine.

Thus creating a more energy efficient home. Cellulose insulation is always blown in. Cellulose is easier to keep out of bird blocks and air conditioner condensate pans. Which means cellulose insulation can be compressed into a space and offer additional r value.

Fiberglass blown in involves using a machine to pump 2 the loose insulation into the wall cavities. Or 7 inches of cellulose. Cellulose produces much less static than fiberglass. At 3 5 per inch of material the r value of blown in cellulose is 23 better per inch than fiberglass batts.

Cellulose has a higher r value and even does not lose the value in the extreme cold were fiberglass may. In contrast to fiberglass insulation cellulose insulation does not trap air in between it s fibers to control heat. Making cellulose a better choice for homes in northern climates. This is slightly more difficult but provides better installation.

This makes it slightly more difficult than fiberglass batts but comparable to blown in cellulose.