Fiberglass Windows

Created from patented Duracast® fiberglass composite, Pella® Impervia® fiberglass windows are a cost-effective, low-maintenance alternative to wood replacement windows. They protect from warping in the heat and shield your home from winter weather, and are available in an array of color choices to accompany your home.

At Pella of Gaithersburg, we have discovered that Pella Impervia windows are a great 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 come with a fiberglass window. Covered by our industry-leading warranty, Pella Impervia replacement windows require little to no maintenance, resulting in exceptional beauty and performance season after season.

Pella® Impervia® Series

  • Made from Duracast®—the strongest, most durable material available in windows
  • Impressive performance
  • The stunning look of a painted wood window
  • ENERGY STAR®-rated options help conserve energy
Available Styles
  • Awning
  • Casement
  • Double-Hung
  • Single-Hung
  • Sliding
  • Basement
  • Bay and Bow

Take a closer look at fiberglass windows at your closest Pella showroom or click below to book a complimentary, in-home consultation and discover the windows that meet the needs of your budget.