Our windows and doors offer outstanding thermal performance and airtightness.
Zola windows are among the most energy efficient windows on the market, with our premium lines even satisfying the stringent requirements of Passive Houses. If you are looking for Passive House windows, you've come to the right place.
For decades, energy codes have pushed European manufacturers to continuously improve window technology, and Zola is proud to have partnered with some of the best suppliers in Europe to create extremely high performance Passive House windows. We offer the most advanced European window technologies including:
- Overall U values as low as 0.123
- Triple seals that provide outstanding airtightness (European Level 4, which is the highest level at which a window can perform)
- Triple, argon-filled glazing of up to 54mm
- Premium German hardware
- Tilt & Turn units
- Expansive Lift Slides and Bifolds
- Patented, German-engineered Purenit, ™ an insulating material
With Zola, you have the option of three frame qualities – 68mm depth (Classic Wood and Classic Clad), 88mm depth (Thermo Clad, Thermo Wood, and Thermo PVC) or 88mm with an integrated layer of Purenit™ insulation (ThermoPlus Clad, our gold standard Passive House windows).
All 88mm frames come with 1 7/8″ triple glazing that features a glass U-Value of 0.088 BTU/hr/ft2/F (0.5 W/m2/k). Combined with the Purenit™ insulated frame, an overall window U-Value of 0.14 BTU/hr/ft2/F (0.8 W/m2/k) is achieved. Warm edge spacers are standard on all our products.
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