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Fiberglass Windows

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

At Pella of Fargo, we have discovered that Pella Impervia windows are a fitting choice for homeowners who want the impressive look of a painted wood window with the top-notch dependability and notable energy efficiency that are a part of a fiberglass window. Supported by our industry-leading warranty, Pella Impervia replacement windows require little to no maintenance, ensuring remarkable beauty and performance year after year.

Pella® Impervia® Series

  • Constructed from Duracast®—the strongest, most durable material available in windows
  • Excellent performance
  • The quality look of a painted wood window
  • ENERGY STAR®-rated options help conserve energy
Available Styles
  • Awning
  • Casement
  • Double-Hung
  • Single-Hung
  • Sliding
  • Basement
  • Bay and Bow
Beautiful custom home features Pella fiberglass windows

Take a closer look at fiberglass windows at your closest Pella showroom or click below to book a complimentary, in-home consultation and find the windows that best fit your style.