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This is a list of the most important GBA articles on triple-glazed windows.
If you are looking for an index that spans all categories, with a special focus on “how to” articles, check out this resource page: “How to do Everything.”
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Choosing Triple-Glazed Windows
Since 1977, when Sweden introduced its stringent energy code, almost all new homes in Sweden have been equipped with triple-glazed windows. Here in the U.S., where energy codes are more lax, triple-glazed windows are still rare. For a minority of U.S. builders, however — especially cold-climate builders of superinsulated homes — triple-glazed windows are considered essential. Since few U.S. manufacturers offer high-solar-gain triple-glazed windows, most Americans get these windows from Canadian manufacturers.
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Making the Case for Triple-Glazed Windows
It won’t surprise many of my readers to learn that I’m a fanatic about energy conservation and efficiency. That goes back more than 30 years to the mid-70s. During those years I’ve paid a lot of attention to windows--and seen dramatic improvement in window performance.
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Passivhaus Windows
UPDATED on June 11, 2013 with new information on European Passivhaus-certified windows available in the U.S. German windows, like German cars, have a very solid reputation for high performance and durability. U.S. interest in German windows has grown in recent years, especially among Passivhaus builders, leading several U.S. importers to conclude that the time is ripe to offer German windows to North American customers.
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All About Glazing Options
UPDATED on May 5, 2016 Everybody has an opinion on windows, and there’s a lot to talk about. Which frame material do you prefer: wood or fiberglass? Do you like double-hungs, sliders, or casements? Who provides better warranty service, Marvin or Pella? Window selection is a complicated topic, so I'll approach the issue in small bites. In this article I’ll focus on glazing.
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What Windows Should I Buy?
Readers often post a simple question on our Q&A page: “What brand of window should I buy?” For an editor, it’s an exasperating question, because it’s unanswerable. The answer depends on a host of factors, including the buyer’s geographical location, performance expectations, budget, and personal sense of aesthetics. Rather than attempting to answer the question, I decided to interview fourteen designers and builders of high-performance homes. I asked them, “What brand of window did you specify on recent high-performance projects — and why?”
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Study Shows That Expensive Windows Yield Meager Energy Returns
An architectural cliché from the 1970s — the passive solar home with large expanses of south-facing glass — is making a comeback. In recent years, we’ve seen North American designers of Passivhaus buildings increase the area of south-facing glass to levels rarely seen since the Carter administration. What’s the explanation for all this south-facing glass? We’re told that there’s no other way for designers to meet the energy limit for space heating required by the Passivhaus standard: namely, a maximum of 15 kWh per square meter per year.
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Presumptive European Superiority Syndrome
UPDATED on October 22, 2014 with an Addendum. [Editor's note: The author of this article, Stephen Thwaites, is a window manufacturer. His company, Thermotech Fiberglass Fenestration, is located in Ottawa, Ontario.] Most of the world, especially the green building community, assumes that “European” implies “more energy-efficient.” When it comes to windows, this automatic presumption of superior energy efficiency is both so common and so misplaced that it deserves a name: the Presumptive European Superiority Syndrome.
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Comparing North American Window Frames to European Frames
[Editor's note: The author of this article, Stephen Thwaites, is a window manufacturer. His company, Thermotech Fiberglass Fenestration, is located in Ottawa, Ontario.]