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New High-Performance Building Components on the Market

New High-Performance Building Components on the Market
Posted on: 29/09/2016|10:09; Source: greenbuildingadvisor.com; Category: Energy Efficiency and Renewable Energy
Subtitle:  A New York-based company imports windows from Poland while a Maine prefabricator adds a Passivhaus-certified roof assembly Images: 

A startup based in New York City is importing high-performance windows from manufacturers in Poland, giving U.S. builders another source of components 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. and other energy-efficient buildings.

The company, called Polwins LLC, imports windows and doors from three manufacturers, each specializing in a particular type of window or door, Adrian Dymarczyk, a principal of the company, said in an email. The manufacturers weren't named.

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