Attic insulation is always important

Lately we have talked about Roxul insulation, Fiberglass insulation, and today let’s take a look at Cellulose.  As you probably know Cellulose insulation is manufactured from news-paper that is headed for the land fill. If you are looking for an insulation product that:

  • Environmentally friendly
  • Great insulation properties
  • Very inexpensive

Then Cellulose is just what you are looking for!  Prior to being blown-in your attic the shredded paper is chemically treated to retard fire and mold.  It really is an excellent product that is then squished/compacted into bales that greatly reduce its volume.

When Cellulose is installed that compacted bales of insulation are broken up and put in a machine that will “fluff up” the cellulose and blow it through a large hose up from the truck into the attic.  Both ends of this job are loaded with dust and installers use proper equipment to avoid contamination.

The desired R-Value is achieved by applying the correct amount of blown-in insulation.  Typically, cellulose has an R-Value of 3.2 per inch.  If a high R-Value is what you want then an average application is going to be at least 15” deep and probably upwards of 20” that would give you an R-Value of R-64.

Like any product Cellulose has advantages and disadvantages:


  1. Cost
  2. Environmentally friendly
  3. Effective in horizontal applications


  1. It does settle and as a result its R-Value will subside
  2. It does not work well in vertical applications as it will settle.

We highly recommend cellulose for use in attics.

What are your thoughts?  Call us at 802.985-5855  We would love to hear from you!


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