Cellulose Vs Fiberglass In Attic

Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.

Cellulose vs fiberglass in attic.

The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Cellulose has an r value of 3 5 3 7 per inch where fiberglass has around 2 1 2 7 r per inch. Fiberglass vs cellulose the pros and cons by comparison posted on mar 23 2017 there are many different types of insulation to use in your home s walls attic and basement but the two most types of insulation are fiberglass and cellulose. So it seems to me the real debate.

When comparing blown in insulation both fiberglass and cellulose are nearly identical in price both costing around 0 70 to 0 80 per square foot for 6 inches of insulation. Properly installed they will both remain in place for the life of the home. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Or 7 inches of cellulose.

Cellulose insulates better than fiberglass especially in very cold weather. Assuming your current attic insulation is made from fiberglass and has a value of r 13 you d have to add roughly 10 inches of additional fiberglass to hit r 38. Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall. Cellulose wins last update.

Cellulose insulation blown in wall r 3 8 r3 9. Compared to fiberglass cellulose is a superb air blocker. Cellulose insulation blown in attic r 3 6 r3 7. This is called wind washing.

Cellulose retains more of its r value through a wider range of temperatures compared to fiberglass. Since cellulose is blown in it fills all the gaps crevices nooks and crannies in your attic unlike batts that can leave gaps. Blown cellulose is typically the preferred choice of insulation for attics. So what are the advantages and disadvantages of each of these.

Blown in cellulose homeowner benefits. You can get to the same place with either material. Air moving through a vented attic deposits dirt and dust into fiberglass batts.