Fiberglass Windows

Crafted from patented Duracast® fiberglass composite, Pella® Impervia® fiberglass windows are a cost-effective, low-maintenance alternative to wood replacement windows. They resist warping in the hotter days and defend against winter weather, and are available in a variety of color choices to match your taste.

At Pella of Lewes, we have learned that Pella Impervia windows are the right choice for homeowners who want the impressive look of a painted wood window with the superior dependability and notable energy efficiency that are inherent to a fiberglass window. Supported by our industry-leading warranty, Pella Impervia replacement windows need little to no maintenance, offering remarkable beauty and performance year after year.

Pella® Impervia® Series

  • Created from Duracast®—the strongest, most durable material you can get in windows
  • Excellent 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

Look into fiberglass windows at your local Pella showroom or click below to schedule a free, in-home consultation and uncover the windows that are right for your budget.