Fiberglass Windows

Made from patented Duracast® fiberglass composite, Pella® Impervia® fiberglass windows are a cost-effective, low-maintenance alternative to wood replacement windows. They resist warping in the summer and shield your home from winter weather, and are offered in an array of color options to match your home.

At Pella of Scottsdale, we have found that Pella Impervia windows are the right choice for homeowners who want the stunning look of a painted wood window with the superior durability and impressive energy efficiency that are a part of a fiberglass window. Supported by our industry-leading warranty, Pella Impervia replacement windows require very little maintenance, resulting in exceptional beauty and performance for years to come.

Pella® Impervia® Series

  • Created from Duracast®—the strongest, most durable material you can have in windows
  • Excellent performance
  • The stunning look of a painted wood window
  • ENERGY STAR®-rated options conserve energy
Available Styles
  • Awning
  • Casement
  • Double-Hung
  • Single-Hung
  • Sliding
  • Basement
  • Bay and Bow

Discover fiberglass windows at your nearby Pella showroom or click below to schedule a no-cost, in-home consultation and discover the windows that are right for your budget.



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