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Intus Introduces a Wood-Framed Window

Promoted as a Passivhaus window, the latest Intus line has pine frames and triple-pane argon-filled glazing

Posted on Oct 10 2013 by Scott Gibson

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 claddingMaterials used on the roof and walls to enclose a house, providing protection against weather. .

Intus says the windows, which are manufactured in Lithuania with lumber from Germany and Austria, are suitable for PassivhausA residential building construction standard requiring very low levels of air leakage, very high levels of insulation, and windows with a very low U-factor. Developed in the early 1990s by Bo Adamson and Wolfgang Feist, the standard is now promoted by the Passivhaus Institut in Darmstadt, Germany. To meet the standard, a home must have an infiltration rate no greater than 0.60 AC/H @ 50 pascals, a maximum annual heating energy use of 15 kWh per square meter (4,755 Btu per square foot), a maximum annual cooling energy use of 15 kWh per square meter (1.39 kWh per square foot), and maximum source energy use for all purposes of 120 kWh per square meter (11.1 kWh per square foot). The standard recommends, but does not require, a maximum design heating load of 10 W per square meter and windows with a maximum U-factor of 0.14. The Passivhaus standard was developed for buildings in central and northern Europe; efforts are underway to clarify the best techniques to achieve the standard for buildings in hot climates. construction. The argonInert (chemically stable) gas, which, because of its low thermal conductivity, is often used as gas fill between the panes of energy-efficient windows. -filled glazingWhen referring to windows or doors, the transparent or translucent layer that transmits light. High-performance glazing may include multiple layers of glass or plastic, low-e coatings, and low-conductivity gas fill. 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.

The window was introduced at the DesignDC Expo in Washington, D.C., in September. All of the windows are custom-made, with costs ranging from $70 to $85 per sq. ft., Intus says.

Among the features listed by Intus:

  • High-density composite foam in the frame that creates a thermal break.
  • Triple-gasket weather-stripping to improve airtightness.
  • Spacers between panes of glass that reduce the risk of condensation.

Intus says windows can be ordered with various solar heat gainIncrease in the amount of heat in a space, including heat transferred from outside (in the form of solar radiation) and heat generated within by people, lights, mechanical systems, and other sources. See heat loss. coefficients. Pine frames can be ordered with a lacquer or water-based finish, and the aluminum cladding is available in a number of colors.

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Image Credits:

  1. Intus

Oct 10, 2013 11:11 PM ET

why is this in blogs ??
by Jin Kazama

A new PH /efficient product is always a good news,
but .... nothing new here .

Why is it pointed out here?
Available somewhere most other aren't ?

please explain the 70$/sqft price tag on this ?

Oct 11, 2013 7:24 AM ET

Response to Jin Kazama
by Martin Holladay

Q. "Why is this in blogs?"

A. This is a news story, not a blog. If you are ever in doubt about what kind of story you are reading, you can check out the list of stories in one of our "landing pages."

Here is the landing page for news stories:
Green Building News

Here is the landing page for GBA blogs:
The Most Recent Blogs

Q. "Nothing new here."

A. GBA sometimes announces new products that we think will be of interest to our readers. If the headline for the story doesn't interest you, just don't read it.

Q. "Please explain the $70 / square foot price tag on this?"

A. Of course the price of your window order will vary depending on several factors. Large windows cost less per square foot than small windows. Fixed windows cost less per square foot than operable windows. As they say, "your mileage may vary."

Oct 12, 2013 11:20 PM ET

Martin ...
by Jin Kazama

Well the website is having some really hard time with Opera ( never tried in other browsers )
because i never ever clicked on the news section ( just found out it was there )
and this one was in the list of the blogs, which is pretty much with QA the only place i look at regularly here ...

But anyhow, thanks for pointing the sections out ... after almost 2 years here , i never realized about the news section ( n00bified ! )

The headline interested me, i just don't feel there is anything new in that product.
It it was only to point out availability... changes the purpose of the article.

About the price,
the only reason i would consider using wood is for reducing manufacturing costs.
But it doesn't seem to be the case here .
We need better windows are a more reasonable cost soon.
Very hard to sell windows@ 60$/sqft + to clients , based solely on their thermal performance.

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