Zola Windows and Doors

Credit: Zola European Windows

What makes this product green?

  • Reduces heating and cooling loads
  • Certified wood


Zola imports European, FSCNonprofit organization that promotes forestry practices that are sustainable from environmental and social standpoints; FSC certification on a wood product is an indicator that the wood came from a well-managed forest.-certified, wood-framed, high performance casement as well as tilt and turn windows designed to meet Passive HouseA 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. standards. Zola Classic windows feature a 2 5/8" deep frame and double-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.. The Zola Thermo features 3 1/2" deep frames and triple-glazing. ThermoPlus windows, only available in aluminum clad, contain a layer of recycled-content polyurethane insulation for a whole-window 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. of 0.13. Zola also offers entrance, patio, tilt-slide, and folding glass doors in the Classic, Thermo, and ThermoPlus lines.

Additional Info


  • Forest Stewardship Council (FSC)


Manufacturer Information

Zola European Windows
1104 Garfield Ave.
Louisville, CO 80027
Phone: 303-578-0001

Listed in: Exterior Doors, Wood Windows