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Update: New windows for the home

kimi
Thinking about new windows for the home and would appreciate comments to this end.

Update: A hearty thanks to each of you for taking the time to make this thread truly worthwhile. I especially liked the comment from Azafshin about replacing the glass only. 80 grand is scary, and half that would run me off morickytick.


Additional comments are still most welcome!!! [;)][:p]
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32 comments

Date Votes
  • sharpshooter039
    Sorry but that is what I did for a living for over 30 years. I have worked as a Factory Rep covering the entire Southern Region for some of the best and some of the worst window manufactures in this country,I also worked for the NFRC.ORG for a few years and got tired of that much travel I could give you the numbers from every reliable source but your mind is made up,, but here is a copy from the people who actually test them,,the amount of light lost through the low-e glass is next to zero,,when they Rate a window's light loss that rating includes the frame and glass,,the total window
    quote:How to maximize daylight?
    Historically, only clear glass was used to maximize the amount of light entering through a window. Especially in cooling-dominated climate, this desirable daylight also came with undesirable solar heat gain. With the advancement of high-performance glazing systems, it is possible for low-E coatings to reject the solar heat gain while allowing the visible light to pass through the glass.

    I will add this and I am done,,Windows without Low-e will NOT meet energy star ratings and in most places will not meet building code;s for new construction..
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  • AzAfshin
    quote:Originally posted by sharpshooter039


    Sorry but that is what I did for a living for over 30 years. I have worked as a Factory Rep covering the entire Southern Region for some of the best and some of the worst window manufactures in this country,I also worked for the NFRC.ORG for a few years and got tired of that much travel I could give you the numbers from every reliable source but your mind is made up,, but here is a copy from the people who actually test them,,the amount of light lost through the low-e glass is next to zero,,when they Rate a window's light loss that rating includes the frame and glass,,the total window
    quote:How to maximize daylight?
    Historically, only clear glass was used to maximize the amount of light entering through a window. Especially in cooling-dominated climate, this desirable daylight also came with undesirable solar heat gain. With the advancement of high-performance glazing systems, it is possible for low-E coatings to reject the solar heat gain while allowing the visible light to pass through the glass.

    I will add this and I am done,,Windows without Low-e will NOT meet energy star ratings and in most places will not meet building code;s for new construction..



    You are correct that replacing a window without Low-e will not meet building codes. That's why we replaced only the glass and not the window. As for my mind being made up, just Google "low e light transmission curve". Here's an example of a website I found with a chart https://www.efficientwindows.org/lowe.php. If you looks at clear glass, it averages just a bit below 90% transmission through the entire visible spectrum while the high end low-e coatings (the ones that cut out the most infrared) average about 70% transmission across the entire visible spectrum (which is higher than the number I quoted before, so I stand corrected, but 65% was the number on Andersen's brochure). Physics can't be denied by 30 years of being in the business, looks like you're the one who's made up his mind no matter what.

    I really don't want to turn this into an ugly confrontation since I do have a lot of respect for you and almost all the other members here. So, let's part as friends that disagree on something as trivial as low-e glass [:)]
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