Blown Insulation For Attics Fiberglass Vs Cellulose

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 insulation for attics fiberglass vs 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. Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation. Energy saver and attic systems we prefer blown in cellulose over blown in and fiberglass batts for several reasons. Or 7 inches of cellulose.

When blown into attics and wall spaces loose fill fiberglass offers an average r 2 5 thermal value per inch the higher the number the greater the insulating effect. Cellulose retains more of its r value through a wider range of temperatures compared to fiberglass. 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.

Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass. Cellulose has an r value of 3 5 3 7 per inch where fiberglass has around 2 1 2 7 r per inch. So it seems to me the real debate. Loose fill or blown cellulose insulation is manufactured primarily from recycled newspapers a very benign product so it poses virtually no ongoing health risk.

Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts. Both fiberglass and cellulose insulation can be installed to completely fill the space inside of wall floor or ceiling cavity. 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. 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.

Blown cellulose is typically the preferred choice of insulation for attics. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Blown in cellulose homeowner benefits. Cellulose blown in ceiling insulation is a good choice for diyers.

How are they similar and how are they different from blown fiberglass vs. You can get to the same place with either material. Cellulose insulation blown in wall r 3 8 r3 9. Blown in cellulose is an environmentally friendly material made from recycled newspaper so it s easier on your skin and lungs.

So what are the advantages and disadvantages of each of these insulation materials.