Fiberglass Windows

Created from patented Duracast® fiberglass composite, Pella® Impervia® fiberglass windows are a cost-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 types to match your home’s design.

At Pella of Concord, we have learned 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 notable energy efficiency that are inherent to a fiberglass window. Supported by our industry-leading warranty, Pella Impervia replacement windows require almost no maintenance, offering striking beauty and performance year after year.

Pella® Impervia® Series

  • Made from Duracast®—the strongest, most durable material you can have in windows
  • Excellent performance
  • The high-end 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

Look into fiberglass windows at your closest Pella showroom or click below to schedule a complimentary, in-home consultation and find the windows that meet the needs of your home.



Live Chat
I can help with your window or door replacement questions.