Casagrande Woodworks Windows

Credit: Casagrande Woodworks

What makes this product green?

  • Reduces heating and cooling loads
  • Certified wood


Casagrande windows incorporate 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 timber, Cardinal or Alpen Glass, Siegenia hardware, and Gutmann claddingMaterials used on the roof and walls to enclose a house, providing protection against weather. .The Synergist model, made in the U.S., has achieved Passivhaus product certification through Germany's 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. Institute and is certified with a whole-window U-value of 0.139 (R-valueMeasure of resistance to heat flow; the higher the R-value, the lower the heat loss. The inverse of U-factor. of 7.2).

Additional Info


  • Forest Stewardship Council (FSC)

Manufacturer Information

Casagrande Woodworks
4230 Cloud Way
Paso Robles, CA 93446
United States
Phone: 805-226-2040
Fax: 805-226-2041

Listed in: Wood Windows