Fiberglass Windows

Created 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 heat and defend against winter weather, and are offered in a selection of color types to complement your home’s design.

At Pella of Washington DC, 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 durability and excellent energy efficiency that are inherent to a fiberglass window. Covered by our industry-leading warranty, Pella Impervia replacement windows need very little maintenance, ensuring exceptional beauty and performance for years to come.

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

Discover fiberglass windows at your nearby Pella showroom or click below to plan a complimentary, in-home consultation and discover the windows that are right for your home.