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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. Available in a variety of colors, they protect against summertime warping and winter weather.

At Pella of Eau Claire, we have found that Pella Impervia windows are a great choice for homeowners who want the warm look of a painted wood window with the superior dependability and excellent energy efficiency that are inherent to a fiberglass window. Covered by our industry-leading warranty, Pella Impervia replacement windows need little to no maintenance, resulting in exceptional beauty and performance year after year.

Pella® Impervia® Series

  • Constructed from Duracast®—the strongest, most durable material you can get in windows
  • Excellent performance
  • The high-end look of a painted wood window
  • ENERGY STAR®-rated options save 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 local Pella of Eau Claire showroom or request a free quote for your project now.