Green Bear Spray Foam Insulation » Fiberglass Insulation http://greenbearinsulation.com Massachusetts soy-based spray foam insulation company and consultants. Thu, 04 Mar 2010 19:13:09 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Here is why fiberglass does not make a good insulator http://greenbearinsulation.com/2009/03/22/here-is-why-fiberglass-does-not-make-a-good-insulator/ http://greenbearinsulation.com/2009/03/22/here-is-why-fiberglass-does-not-make-a-good-insulator/#comments Sun, 22 Mar 2009 20:26:32 +0000 greenbear17 http://greenbearinsulation.com/?p=85 There are many reason that fiberglass does not make a good insulator. Here is a short list:

* Fiberglass insulation loses 40% of its insulative properties when outside temperatures drop to 20 degrees. Not good news for New Englanders.
* A 1.5% increase in moisture content inside a wall or ceiling cavity reduces the R-value of fiberglass insulation by up to 50%.
* For fiberglass insulation to be effective it must touch stud cavities on all six sides, with no air gaps.
* Fiberglass insulation must be fully expanded. Stuffing insulation into gaps eliminates its insulative properties.
* In shell wall cavities, areas surrounding utility outlets are impossible to properly insulate using fiberglass.

Soy-based spray foam insulation is the way to go. Learn more about our spray foam products on our website http://www.greenbearinnovations.com.

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