Cellulose Vs Fiberglass In Attic

Air moving through a vented attic deposits dirt and dust into fiberglass batts.

Cellulose vs fiberglass in attic. Blown in cellulose homeowner benefits. Cellulose wins last update. So what are the advantages and disadvantages of each of these. Compared to fiberglass cellulose is a superb air blocker.

Cellulose retains more of its r value through a wider range of temperatures compared to fiberglass. 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. Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall. 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 has an r value of 3 5 3 7 per inch where fiberglass has around 2 1 2 7 r per inch. Higher r value per inch. Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation.

You can get to the same place with either material. Cellulose insulation blown in attic r 3 6 r3 7. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. 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.

The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Cellulose insulates better than fiberglass especially in very cold weather. Or 7 inches of cellulose. Since cellulose is blown in it fills all the gaps crevices nooks and crannies in your attic unlike batts that can leave gaps.

Cellulose insulation blown in wall r 3 8 r3 9. Blown cellulose is typically the preferred choice of insulation for attics. So it seems to me the real debate.