31 Jan '13, 10am

Alex Wilson chooses Alpen Windows with Heat Mirror glazing (2 layers of glass and 2 layers of plastic film):

Alex Wilson chooses Alpen Windows with Heat Mirror glazing (2 layers of glass and 2 layers of plastic film):

Last year, Robert and a partner were successful in buying back Alpen from Serious Materials. I’m hopeful that the company can regain its stature at the top of the window-performance pack — and give the European Passive House A 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...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/energy-sol...

Tweets

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