Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic.
Blown in cellulose vs fiberglass insulation attic.
Cellulose has an r value of 3 5 3 7 per inch where fiberglass has around 2 1 2 7 r per inch.
So what are the advantages and disadvantages of each of these.
Compared to fiberglass cellulose is a superb air blocker.
Blown in cellulose homeowner benefits.
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.
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.
Higher r value per inch.
We offer our review of the three most popular types of attic insulation with a look at each one s pros and cons.
Blown in insulation sometimes referred to as loose fill insulation is insulation literally blown in with a blowing machine.
Blown in spray foam batts and blankets.
Very common very problematic.
The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass.
Cellulose retains more of its r value through a wider range of temperatures compared to fiberglass.
This is called wind washing.
Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.
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.
There are two ways to get your insulation whether fiberglass or cellulose.
Blown cellulose is typically the preferred choice of insulation for attics.
Dirty fiberglass batts have a significantly reduced r value.
Air moving through a vented attic deposits dirt and dust into fiberglass batts.
Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation.
Batts or loose fill.