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Fiberglass Windows

Crafted from patented Duracast® fiberglass composite, Pella® Impervia® fiberglass windows are a cost-effective, low-maintenance alternative to wood replacement windows. Available in a collection of colors, they protect against summertime warping and winter weather.

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

Pella® Impervia® Series

  • Created from Duracast®—the strongest, most durable material available in windows
  • Impressive performance
  • The high-end 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
Beautiful custom home features Pella fiberglass windows

Look into fiberglass windows at your local Pella of Terre Haute showroom or get a free quote for your project now.