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Old 06-26-2009, 08:06 PM  
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Default Volume in a package in insulation?

I am talking about the pink fiberglass insulation. My crawlspace has a concrete wall, and on top of that is the framing of the house. This framing is about 12 inches high till I get to the floor joice's. I want to insulate this section (the wood part). My question is this: if I was to buy a package of insulation, and lay the pieces end to end, how long would one package last, in feet? My crawlspace perimeter is 140 feet, and I want to know how many packages of insulation I need. I will fit the insulation between the studs, and staple plastic over it.


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Old 06-27-2009, 06:40 AM  
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Default Math

The bundles will tell you how much linear feet you get with each one. So if you need insulation to fit a 16" inch wide bay that is 12 inches tall in a 2x4 wall thickness....that is what you need to measure for.

So if your wall is 1 foot many pieces will you need at 16 inches wide? Count the bays.
That will be your linear feet.

Hope this makes sense, if not, feel free to ask again.
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Old 06-27-2009, 06:25 PM  
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Many of the insulation packages are sold in different lengths
Some are in 4' lenghts - 10-11 per pkg
Some in 40' rolls
So it depends upon the Rvalue you want

Do you have a dirt floor or concrte in the crawl space?
If dirt it should be covered w/plastic to prevent keep moisture out
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