Matted insulation

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Old 12-06-02, 07:08 AM
artschwartz
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Question Matted insulation

My attic has blown in fiberglass insulation. It appears that the insulation has matted down. From what I have read this also means that the insulation is no longer as efficient as it used to be because the trapped air spaces have been reduced.

Since the insulation is blown in is there a method to "refluff" the insulation? Or should I replace it?

Art Schwartz
 
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  #2  
Old 12-06-02, 07:31 AM
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Matted insulation

Never compress or fluff your insulation. Even if it asks you to... "Fluff me... fluff me now!" But remember R-values? They are computed with the insulation in its "natural state". For example, fiberglass batts will expand after a batt is unrolled. Blown or poured cellulose will tend to settle over time. These events have been been taken into account in computing their R-values. If anything, squeezing or fluffing it will decrease their R-values... not a good thing!

I'VE GOT YOUR LOVE TO KEEP ME WARM... BUT EXTRA INSULATION SURE HELPS!
Let The Natural Handyman Help Insulate You From The Colder Facts Of Life
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Retrieved 06 December 2002
http://www.naturalhandyman.com/iip/i.../infinsul.shtm
 
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