triple glazing

Presumptive European Superiority Syndrome

Posted on April 19,2015 by Stephen Thwaites in glazing

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.

Next Generation Mobile Homes

Posted on April 19,2015 by ScottG in double stud wall

UPDATED on November 6, 2013 with information on the design team A high-performance mobile home that will use a fraction of the energy of standard manufactured housing and rival the energy efficiency and quality of advanced stick-built homes has made its public debut in Vermont.

Intus Introduces a Wood-Framed Window

Posted on April 19,2015 by ScottG in Intus

Intus has introduced a new triple-glazed window, the Premier 78 Alu Mira Advanced, which combines a pine frame, high-density foam, and exterior aluminum cladding. Intus says the windows, which are manufactured in Lithuania with lumber from Germany and Austria, are suitable for Passivhaus construction. The argon-filled glazing has a U-value of 0.088, and when combined with the frame has a U-value of 0.14, the equivalent of about R-7.

State-of-the-Art Windows for A New Home

Posted on April 19,2015 by AlexWilson in Alpen

Having written about windows and emerging window technologies for longer than I care to admit (since before low-e coatings even existed), I must say that it’s incredibly fun to be building a house and having an opportunity to try out some of the leading-edge stuff I’ve been writing about.

Study Shows That Expensive Windows Yield Meager Energy Returns

Posted on April 19,2015 by user-756436 in net zero

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.

Looking Through Windows — Part 3

Posted on April 19,2015 by user-961160 in Passivhaus

[Editor's note: Roger and Lynn Normand are building a [no-glossary]Passivhaus[/no-glossary] in Maine. This is the seventh article in a series that will follow their project from planning through construction.] Woe are we with windows! We started seriously exploring window options in June. Two months later, we are STILL hung-up on windows. Most people who build new homes go look at window samples in few building supply stores, check the features, open and close the display units, get a price, and quickly decide, “Let’s go with this one.”

Looking Through Windows — Part 2

Posted on April 19,2015 by user-961160 in Passivhaus window

[Editor's note: Roger and Lynn Normand are building a [no-glossary]Passivhaus[/no-glossary] in Maine. This is the sixth article in a series that will follow their project from planning through construction.]

Plans and Pricing for Our House in Maine

Posted on April 19,2015 by user-961160 in blueprint

[Editor's note: Roger and Lynn Normand are building a [no-glossary]Passivhaus[/no-glossary] in Maine. This is the fourth article in a series that will follow their project from planning through construction.] So far, we have been guesstimating how much this project will cost. Yes, we could use estimates based on cost per square foot, but there are are several design factors that influence that equation.

Cool Window and Glazing Products from the AIA Convention

Posted on April 19,2015 by AlexWilson in BIPV

I just spent three days at the American Institute of Architects annual convention in Washington, DC, including a fair amount of time at the massive trade show there. I didn’t make it all the way through the acres of exhibits over the eight hours or so I walked the floor, but I saw some really interesting products. I’m highlighting here a few of the windows and glazing-related products I found.

Window Performance 4 — Dealing with Edge Losses

Posted on April 19,2015 by AlexWilson in double glazing

Over the last three weeks I've focused on the major strategies for improving the energy performance of windows: adding extra layers of glass, increasing the thickness of the airspace between the layers of glass, adding low-emissivity coatings, and replacing air with a low-conductivity gas fill. These strategies all help to reduce heat flow through an insulating glass unit (IGU), and if we do a really good job with these strategies we can achieve center-of-glass R-values of R-5 or higher.

New Green Building Products — February 2012

Posted on April 19,2015 by user-756436 in Duct Blaster

My folder of interesting new building products is getting thick, so it’s time for another new product roundup. I’ll review three brands of photovoltaic roofing designed to integrate with asphalt shingle roofs. I’ll also discuss several new types of insulation: a new type of rigid foam, batts made from plastic fibers, and batts made from hemp.

New Green Building Products — September 2011

Posted on April 19,2015 by user-756436 in door

About every six months, I report on new products that catch my eye. This round-up features products from both sides of the Atlantic Ocean: high-performance windows from Maine, Ontario, and Lithuania; high-performance doors from Poland; and high-performance tapes from Switzerland.

More Job Site Visits in Maine

Posted on April 19,2015 by user-756436 in co-housing

On my second day in Maine, I toured seven energy-efficient buildings in various stages of construction. In last week’s blog, I reported on my visit to Richard Renner’s office and Jesse Thompson’s house. This blog picks up the story with a report on my visit to three sites: an ongoing deep-energy retrofit project, a new home in Falmouth, and an unusual co-housing project. If you're the type of reader who prefers pictures to words, you're in luck: this week's blog is loaded with photos.

Folding Glass for Passivhaus Projects

Posted on April 19,2015 by Fretboard in passive house

NanaWall Systems is a veteran in the folding-glass-wall business. Launched in 1986, the company significantly expanded its lineup after 1996, when it forged a partnership with Solarlux Technologies, based in Bissendorf, Germany.

Are High-Performance Windows Worth Their High Cost?

Posted on April 19,2015 by ScottG in glazing

Randy George is in the final planning stages for a new house he will be building this summer in Vermont, and from the sound of it he won't have much trouble staying warm through those long winters. In addition to R-45 walls, an R-65 roof and R-20 slab, the house will have air infiltration rates lower than one air change per hour at 50 pascals of depressurization. Although not quite meeting the Passivhaus standard, that's extremely tight construction.

All About Glazing Options

Posted on April 19,2015 by user-756436 in glazing

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.

In Search of the Most Energy-Efficient Windows

Posted on April 19,2015 by ScottG in fiberglass window

It seems like a very long time ago, doesn't it, that windows were considered simple building components? As long as they opened and closed and let in sunlight most of us were content. We know now that windows are anything but simple. They're an essential part of an energy efficient building envelope; they must simultaneously admit sunlight (and a certain amount of solar energy — but not too much), minimize heat loss or gain, prevent drafts, and last a generation or two.

7 Steps to an Energy-Efficient House: 4. Windows

Posted on April 19,2015 by Betsy Pettit in deep energy retrofit

Editor's introduction: With energy prices rising again, many homeowners are planning energy-efficiency improvements to their homes. But most people are unsure of where to begin, and even seasoned builders don’t always know which priorities should rise to the top of the list. Betsy Pettit, an architect at [Building Science Corporation](http://www.buildingscience.com), recommends starting where you can get the most bang for the buck.

Choosing Triple-Glazed Windows

Posted on April 19,2015 by user-756436 in Canadian window

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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