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  1. #1
    Super Member JDgreen227's Avatar
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    Nov 2003
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    Central Michigan
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    4210 MFWD Ehydro--'89 JD 318

    Default Basement window insulation

    I just finished installing the inside window insulation I put on every fall. Have seven Anderson single pane tilt-in basement windows with an external storm pane, and inside I first add 1" of R-5 foam, then a layer of fiberglass R-13, then 2-3 more 1" R-5 layers of foam. Since the entire basement is insulated with stud walls and R-13, I think it makes sense to cover the windows too. I sometimes wonder how much heat loss through the glass my window insulation prevents....anybody know of a source for that information? Thanks.
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    Rather than worry about the things you want but don't have, be grateful for the things you don't want and don't have.

    I didn't plan to do much of anything today, but by noon I was almost half done.

  2. #2
    Elite Member Tig's Avatar
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    Oct 2006
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    The County, Ontario, Canada
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    Kubota, B7100HST-D

    Default Re: Basement window insulation

    Try this

    Run it once with your windows detailed, once without. Compare the difference.
    Steve

    The best things in life are not things.

  3. #3
    Super Member JDgreen227's Avatar
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    Nov 2003
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    Central Michigan
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    4210 MFWD Ehydro--'89 JD 318

    Default Re: Basement window insulation

    Quote Originally Posted by Tig View Post
    Try this

    Run it once with your windows detailed, once without. Compare the difference.
    Thank you for the link...I ran it one time with the windows listed as single pane, then ran it the second time with the windows omitted as they are better insulated than the walls when covered...the difference in heat loss between the two was about 4.5%
    Rather than worry about the things you want but don't have, be grateful for the things you don't want and don't have.

    I didn't plan to do much of anything today, but by noon I was almost half done.

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