Fiberglass Vs Cellulose Insulation For Attics

Blown cellulose is typically the preferred choice of insulation for attics.

Fiberglass vs cellulose insulation for attics.

Cellulose insulates better than fiberglass especially in very cold weather. Posted september 19 2019 by lewis insulation filed under attic insulation. Blown in insulation is used for new constuction and retrofitting existing attics with additional insulation. Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.

Attic insulation contrast compare. Pros and cons of loose fill fiberglass attic insulation. Don t let money fly out of your roof. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic.

Fiberglass insulation is the easiest insulation product on the market to install and if installed correctly the most effective product on the market for home attic insulation. Loose fill fiberglass seems to dominate attic insulation in new construction homes and has an r value of approximately 2 5 per inch. When using cellulose blown in dry insulation it requires a machine to achieve its purpose and a training session from wherever you rent the blower from. Or 7 inches of cellulose.

Fiberglass insulation blown in attic r2 2 r4 3. The attic is one of the most essential areas of the home to ensure proper insulation in. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Installer benefits for cellulose and fiberglass.

When used in an attic space however both types of insulation are ineffective at air flow across the attic floor such as a strong gust of wind. Attic insulation keeps the desirable temperature in and the undesirable temperature out. If you check with the cellulose insulation manufacturers association they ll assure you that cellulose is definitely your best choice for insulation. Fiberglass insulation and cellulose insulation offer similar r values.

Cellulose wins last update. So what are the advantages and disadvantages of each of these. See below for homeowner vs. R values for blown in are determined by the material installed settled depth and density.

If fiberglass batts become compressed losing some of their air pockets then this insulation may be more affected by air flow than cellulose which performs well regardless of density. Fiberglass batt or roll insulation r3 2. 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.