Blown In Cellulose Vs Fiberglass Insulation Attic

Cellulose retains more of its r value through a wider range of temperatures compared to fiberglass.

Blown in cellulose vs fiberglass insulation attic.

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. Sometimes loose fill insulation is referred to as blown in insulation because an installer literally blows it into your home with a special machine.

Your options for attic insulation range from radiant barriers to sheets of mineral wool but most homeowners stick with products made from cellulose or fiberglass. Dirty fiberglass batts have a significantly reduced r value. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Blown cellulose is typically the preferred choice of insulation for attics.

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. Batts or loose fill. Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation. There are two ways to get your insulation whether fiberglass or cellulose.

The material can be either fiberglass or cellulose and consists of fiber foam or other materials in small particles and can even feel like down. Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass. We offer our review of the three most popular types of attic insulation with a look at each one s pros and cons. Very common very problematic.

Types of fiberglass and cellulose insulation. Blown in insulation sometimes referred to as loose fill insulation is insulation literally blown in with a blowing machine. This is called wind washing. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass.

Because it is denser than fiberglass cellulose is much more resistant to wind washing. So what are the advantages and disadvantages of each of these.