Rieder KG Wood and Vinyl Passivhaus Windows

Credit: Cembra Inc.

What makes this product green?

  • Reduces heating and cooling loads


Austrian manufacturer Rieder KG makes high-performance wood and vinylCommon term for polyvinyl chloride (PVC). In chemistry, vinyl refers to a carbon-and-hydrogen group (H2C=CH–) that attaches to another functional group, such as chlorine (vinyl chloride) or acetate (vinyl acetate). windows, including some certified by the 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. Institut to meet Passivhaus standards for airtightness and thermal performance. These double- and triple-glazed windows range in overall U-factorMeasure of the heat conducted through a given product or material—the number of British thermal units (Btus) of heat that move through a square foot of the material in one hour for every 1 degree Fahrenheit difference in temperature across the material (Btu/ft2°F hr). U-factor is the inverse of R-value. from 0.14–0.23 with center-of-glass U-factors ranging from 0.11–0.19, tested to European Standard EN 10077. Aluminum claddingMaterials used on the roof and walls to enclose a house, providing protection against weather. is available. The sealed units, filled with argonInert (chemically stable) gas, which, because of its low thermal conductivity, is often used as gas fill between the panes of energy-efficient windows. , range from 24–44 mm. The frames, available in spruce, larch, oak, and others on request, are typically 68–109 mm deep. A multi-step profile create a triple-seal for superior airtightness.

Manufacturer Information

Cembra Inc.
68 Hosking Ln.
Accord, NY 12404
Phone: 212 334 3370

Listed in: Plastic Windows, Wood Windows