Cellulose Vs Fiberglass Attic

Blown in cellulose homeowner benefits.

Cellulose vs fiberglass attic.

Both fiberglass and cellulose insulation can be installed to completely fill the space inside of wall floor or ceiling cavity. Properly installed they will both remain in place for the life of the home. Cellulose wins last update. So what are the advantages and disadvantages of each of these.

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. This is called wind washing. Higher r value per inch. Compared to fiberglass cellulose is a superb air blocker.

Cellulose has an r value of 3 5 3 7 per inch where fiberglass has around 2 1 2 7 r per inch. 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. Cellulose insulates better than fiberglass especially in very cold weather. Cellulose insulation blown in attic r 3 6 r3 7.

Cellulose retains more of its r value through a wider range of temperatures compared to fiberglass. Air moving through a vented attic deposits dirt and dust into fiberglass batts. Cellulose insulation blown in wall r 3 8 r3 9. Since cellulose is blown in it fills all the gaps crevices nooks and crannies in your attic unlike batts that can leave gaps.

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. So it seems to me the real debate. More comfortable and energy efficient. Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall.

Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Or 7 inches of cellulose.