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Old 07-24-2008, 02:52 PM   #1
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Insulation Question?


Can someone tell me which is better......blown insulation or rolled? With the new house being built I need to know which way to go and what brand to use. Thanks

Scott

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Old 07-24-2008, 03:37 PM   #2
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Insulation Question?


I'd go with a closed cell insulation. The initial cost is higher than fiberglass, but it will seal all the cavities and will save energy/ money on your heating and cooling costs.

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Old 07-24-2008, 03:42 PM   #3
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Insulation Question?


Thanks for the quick reply. Do you have a brand that you would recommend for this? Thanks.
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Old 07-24-2008, 03:50 PM   #4
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Insulation Question?


Blown cellulose beats batts all day long. The closed cell foam is at least twice as expensive, but is a lot better product.

Icynene is a foam product that is commonly used. It is not a DIY process unfortunately.
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Old 07-24-2008, 04:00 PM   #5
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Insulation Question?


So when you say the blown is better, what would I be looking for in terms of product name? Also, does anyone know the price difference in the blow, rolls and the foam you mention above?
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Old 07-24-2008, 05:15 PM   #6
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Insulation Question?


You'll have to get local prices since labor costs vary so much. I would bet fiberglas and cellulose are fairly close per unit of R-value installed. Foam will be higher but I would think comfort would be better and payback period may be a bit faster but you'd have to run the numbers.
If you get the costs you can figure it all out at:
http://www.ornl.gov/~roofs/Zip/ZipHome.html

Share what you come up with; it'd be interesting to hear.

Good luck with the new house!
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Old 07-24-2008, 09:23 PM   #7
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Insulation Question?


Bob:

Thanks for the link and here are the results:

ZIP-Code Results

Here is what we know about your house. You live in Gainesville, GA and your zip code starts with 305.You are building a new house with ductwork in an unheated part of the house. Your alternative investment rate of return is 3.4%. The following table shows what we know about your heating and cooling systems:
Heating Cooling System Natural Gas Central ElectricEfficiency High (80.0%) Very High (SEER = 14.0)Cost 15.28 $/1000 cubic ft9.21 cents/kWh
If you want more information about how to buy or install insulation, please read the Insulation Fact Sheet. To view the cost values used in this calculation, please see the Insulation Cost Table. Here are out insulation level recommendations for your home.
Wood-Framed Building Insulation Location R-Value* Notes Attic 49.0 - Wall sheathing 5.0 It is important to use both the insulative sheathing and cavity insulation recommended. Insulative sheathing may be placed outside of wood sheathing product, or special braces can be used. Wall cavity 15.0 -
Basements and Foundations Insulation Location R-Value* Notes Slab edge 8.0 Extend the slab insulation 2 feet below ground level. Basement wall exterior 10.0 Exterior insulation on a below-grade wall is used only if you choose not to insulate the interior side of your basement wall.

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