So it seems to me the real debate.
Cellulose vs fiberglass attic.
So what are the advantages and disadvantages of each of these.
Cellulose has an r value of 3 5 3 7 per inch where fiberglass has around 2 1 2 7 r per inch.
Blown cellulose is typically the preferred choice of insulation for attics.
Compared to fiberglass cellulose is a superb air blocker.
Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.
The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass.
More comfortable and energy efficient.
Air moving through a vented attic deposits dirt and dust into fiberglass batts.
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.
Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall.
Properly installed they will both remain in place for the life of the home.
Higher r value per inch.
Both fiberglass and cellulose insulation can be installed to completely fill the space inside of wall floor or ceiling cavity.
Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation.
Or 7 inches of cellulose.
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.
You can get to the same place with either material.
Cellulose wins last update.
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.
Cellulose insulates better than fiberglass especially in very cold weather.
Blown in cellulose homeowner benefits.
Cellulose insulation blown in wall r 3 8 r3 9.
Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic.
Cellulose insulation blown in attic r 3 6 r3 7.