Better For Attic Insulation Fiberglass Or Cellulose

This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic.

Better for attic insulation fiberglass or cellulose.

Sources many fiberglass installers fluff the fiber with extra air so you don t get as much insulation as you re supposed to. Cellulose insulation is also chemically treated to resist fire insects and mold. Cellulose provides better sound insulation than fiberglass i e homes are less noisy with it. Batts must be cut tightly and you can t have gaps.

Fibreglass is perhaps the most common product available in the market for insulation outpacing its close competitor cellulose by 50 1. Sloppy people aren t suited for this job. Blown cellulose is typically the preferred choice of insulation for attics. When you install loose fill insulation it s hard to miss a spot the way you might with batt insulation.

When installed properly in similar areas they perform about the same at 3 5 to 3 7 r value. Cellulose has a slightly higher r factor a unit of thermal resistance with an r value of approximately 3 0 per inch while fiberglass ranges from r 2 1 to r 2 7. Cellulose has 38 better air infiltration than fiberglass. Both fibreglass and cellulose are the two most inexpensive insulation products that you could use.

Loose fill insulation is just better. Fiberglass is a suspected carcinogen. The thermal performance of fiberglass insulation is directly related to its ability to trap and maintain very small pockets of air. Fiberglass and cellulose have similar r values with ranges depending on how and where they are installed.

Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Cellulose is more difficult to cheat than fiberglass. Making cellulose a better choice for homes in northern climates. Cellulose and fiberglass have similar insulating values.

Blown in fiberglass creates a seamless blanket in your attic. From the speed and ease of installation to the virtual impossibility of installing it wrong assuming you re experienced loose fill fiberglass or cellulose is usually more effective than batt insulation. The higher the r value the better the insulation performs. Cellulose insulation is considered green as it is made from recycled newspaper and requires less energy to manufacture than fiberglass insulation.

It has a better resistance to air flow and prevents the upward movement of air caused by temperature differences.