Cellulose Or Fiberglass Attic Insulation

You can get to the same place with either material.

Cellulose or fiberglass attic insulation.

Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall. This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic. Attic insulation contrast compare. 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.

Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Pros and cons of loose fill fiberglass attic insulation. Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics. 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.

Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass. Loose fill cellulose is relatively inexpensive yet still has an r value of about 3 5 per inch of thickness compared to fiberglass r value between r3 to r4 per inch. The attic is one of the most essential areas of the home to ensure proper insulation in. Cellulose wins last update.

Lighter in weight than cellulose or mineral wool but it settles more than those materials so you ve got to put in a thicker layer to get the protection you need. Cellulose insulates better than fiberglass especially in very cold weather. When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding. Cellulose is more difficult to cheat than fiberglass.

Or 7 inches of cellulose. So what are the advantages and disadvantages of each of these. Posted september 19 2019 by lewis insulation filed under attic insulation. Attic insulation keeps the desirable temperature in and the undesirable temperature out.

Loose fill fiberglass seems to dominate attic insulation in new construction homes and has an r value of approximately 2 5 per inch. 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. Don t let money fly out of your roof. Recycled glass or sand that s melted and spun into fibers.

Thus creating a more energy efficient home. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Cellulose has 38 better air infiltration than fiberglass.