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Fiberglass Windows

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

At Pella of Ketchum, we have learned that Pella Impervia windows are a great choice for homeowners who want the stunning look of a painted wood window with the top-of-the-line dependability and excellent energy efficiency that are a part of a fiberglass window. Supported by our industry-leading warranty, Pella Impervia replacement windows demand very little maintenance, ensuring exceptional beauty and performance for years to come.

Pella® Impervia® Series

  • Made from Duracast®—the strongest, most durable material you can get in windows
  • Exceptional performance
  • The high-end 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

Discover fiberglass windows at your closest Pella showroom or click below to schedule a complimentary, in-home consultation and find the windows that best fit your budget.