Fiberglass Windows

Created 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 selection of color choices to accompany your home’s design.

At Pella of Beltsville, we have found that Pella Impervia windows are a great choice for homeowners who want the impressive look of a painted wood window with the top-notch reliability and impressive energy efficiency that come with a fiberglass window. Supported by our industry-leading warranty, Pella Impervia replacement windows demand very little maintenance, resulting in exceptional beauty and performance season after season.

Pella® Impervia® Series

  • Constructed from Duracast®—the strongest, most durable material available 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

Look into fiberglass windows at your nearby Pella showroom or click below to plan a no-cost, in-home consultation and find the windows that best fit your home.