Fiberglass Windows

Made from patented Duracast® fiberglass composite, Pella® Impervia® fiberglass windows are a budget-friendly, low-maintenance alternative to wood replacement windows. They resist warping in the heat and stand up to winter weather, and are available in a variety of color options to match your home.

At Pella of Northern Virginia, we have discovered that Pella Impervia windows are a fitting choice for homeowners who want the warm look of a painted wood window with the top-of-the-line dependability and excellent energy efficiency that are inherent to a fiberglass window. Covered by our industry-leading warranty, Pella Impervia replacement windows require almost no maintenance, offering striking beauty and performance season after season.

Pella® Impervia® Series

  • Constructed from Duracast®—the strongest, most durable material you can get in windows
  • Impressive 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 local Pella showroom or click below to schedule a free, in-home consultation and uncover the windows that best fit your budget.