Fiberglass Windows

Created from patented Duracast® fiberglass composite, Pella® Impervia® fiberglass windows are a budget-friendly, low-maintenance alternative to wood replacement windows. They prevent warping in the summer and defend against winter weather, and are available in a selection of color options to accompany your home.

At Pella of Danville, we have learned that Pella Impervia windows are a fitting choice for homeowners who want the impressive look of a painted wood window with the top-of-the-line dependability and excellent energy efficiency that are a part of a fiberglass window. Supported by our industry-leading warranty, Pella Impervia replacement windows demand little to no maintenance, resulting in 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 quality look of a painted wood window
  • ENERGY STAR®-rated options save energy
Available Styles
  • Awning
  • Casement
  • Double-Hung
  • Single-Hung
  • Sliding
  • Basement
  • Bay and Bow
Beautiful custom home features Pella fiberglass windows

Look into fiberglass windows at your local Pella showroom or click below to schedule a no-cost, in-home consultation and uncover the windows that are right for your style.