Fiberglass insulation contains billions of tiny glass fibers which contain trapped bubbles of air.
Cellulose vs fiberglass attic.
Cellulose is the second most common.
This is called wind washing.
As the temperature difference between the living space and attic increases the r value of blown fiberglass diminishes.
The paper is broken down into cellular fibers that provide insulation.
But which one should you pick.
It is made of shredded paper plus a fire retardant chemical known as a borate.
Loose fill blown fiberglass insulation has another slight problem.
Air moving through a vented attic deposits dirt and dust into fiberglass batts.
Benefits of cellulose insulation.
Any insulation is better than no insulation.
Cellulose resists blowing when installed fiberglass tends to blow around stick to the attic ceiling and drift.
Compared to fiberglass cellulose is a superb air blocker.
Cellulose is easier to keep out of bird blocks and air conditioner condensate pans.
Both types of insulation can you know insulate.
Cellulose provides better sound insulation than fiberglass i e homes are less noisy with it.
Dirty fiberglass batts have a significantly reduced r value.
The manufacture of fiberglass is 80 more energy intensive than cellulose.
This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to.
Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic.
Both fibreglass and cellulose are the two most inexpensive insulation products that you could use.
Cellulose insulation includes cellulose cells that have natural insulating power.
More consistent pricing from cellulose manufacturers than fiberglass.
Fiberglass is the most common.
Thus creating a more energy efficient home.
Fiberglass batts don t offer that flexibility.
If you ve got bare uninsulated areas on the floor of your attic getting some kind of insulation in there is a must.
You can add batts in easy to access places such as the attic but not in between walls.
Once it has settled fiberglass has an r value of 2 1 2 7 per inch while cellulose has an r value of approximately 3 0 per inch.
Because the loose particles blown in fill any and all odd shaped areas of the attic floor cellulose offers superior coverage without the need to custom fit pieces.
Once installed in the attic cellulose loose fill insulation looks like mounds of freshly fallen snow covering the attic floor.
Cellulose has an r factor of at least 3 8 per inch moderately higher than fiberglass batts.
Because it is denser than fiberglass cellulose is much more resistant to wind washing.
Fiberglass is a suspected carcinogen.
Better insulator sometimes cellulose and fiberglass batts typically have similar r values of about 3 2 to 3 8 per inch.
