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Community and Q&A

Wanting to install new casement windows

userfriendly | Posted in Green Products and Materials on

The house is full brick veneer ranch 1955 north/south orientation zone 5a. I have blown cellulose in the wall cavities. Cellulose is going to be added to attic after the rewire. Having a hard time choosing the casement windows for this house. It has the original Pella roll screen windows. Which I think were installed prior to the brick. There is 2″ from rough opening to the brick. I am thinking I will add the brick mould after the windows are replaced. All white in color is fine with triple panes. What would be the most bang for the buck? I am going to be air sealing and insulating the best I can. Thank you

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  1. GBA Editor
    Martin Holladay | | #1

    Q. "What would be the most bang for the buck?"

    A. I'm not sure exactly what you mean by your question. In general, though: unless your windows are in very bad shape, it's hard to justify the cost of window replacement. Your energy savings will never be high enough to justify the cost of new windows.

    In your climate zone, the most bang for the buck (if you want to improve your window performance) would come from adding storm windows with hard-coat low-e glazing.

    Here is a link to an article with more information: What Should I Do With My Old Windows?

  2. userfriendly | | #2

    Would a storm window be a single pane of glass mounted to the brick mould? Not familiar with hard coat low e glasing could you describe. Thanks

  3. Expert Member
    Dana Dorsett | | #3

    Indium tin oxide is a hard to scratch low-E material that gets deposited on one side of the glass in many low-E windows, not just low-E storms. Almost all low-E storm windows use that material. The infra-red reflectivity spectrum if indium tin oxide passes through most of the solar spectrum, but reflects in the deep infra-red. That makes it better at retaining heat than reflecting solar spectrum, (rejecting solar gain), which makes it more suitable for heating dominated climates than cooling dominated climates.

    The Larson low-E storms sold through box stores are pretty good if you go with the higher grade series for better air tightness.

    The tightest storms in the industry are from Harvey (a northeastern regional player), and they do offer a low-E hard coat glazing option.

  4. GBA Editor
    Martin Holladay | | #4

    Dana has described the low-e coating on the storm window glass.

    If you aren't sure the best way to mount these storm windows, just call up a contractor. It should be easy to find a storm window installer in your area who is willing to visit your house.

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