In most situations we prefer the air and heat flow resistance of.
Cellulose vs fiberglass blown in 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.
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.
Very common very problematic.
So what are the advantages and disadvantages of each of these insulation materials.
Energy saver and attic systems we prefer blown in cellulose over blown in and fiberglass batts for several reasons.
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.
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.
Blown in cellulose homeowner benefits.
Higher r value per inch.
There are two ways to get your insulation whether fiberglass or cellulose.
Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation.
Sometimes loose fill insulation is referred to as blown in insulation because an installer literally blows it into your home with a special machine.
Batts or loose fill.
Cellulose insulation blown in attic r 3 6 r3 7.
Loose fill or blown cellulose insulation is manufactured primarily from recycled newspapers a very benign product so it poses virtually no ongoing health risk.
Types of fiberglass and cellulose insulation.
R value measures the resistance of heat flow through a material the higher the r value the better the material is at resisting heat flow.
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.
Blown cellulose is typically the preferred choice of insulation for attics.
Blown fiberglass on the other hand is made up of very fine strands of glass and these tiny fibers are a carcinogen that can easily be inhaled into your lungs.
Cellulose insulation blown in wall r 3 8 r3 9.
Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.
So it seems to me the real debate.