Fiberglass Windows

Made from patented Duracast® fiberglass composite, Pella® Impervia® fiberglass windows are a cost-friendly, low-maintenance alternative to wood replacement windows. They protect from warping in the summer and shield your home from winter weather, and are carried in a selection of color options to match your home’s design.

At Pella of Cape Cod, we have learned that Pella Impervia windows are the right choice for homeowners who want the stunning look of a painted wood window with the top-notch reliability and notable energy efficiency that are inherent to a fiberglass window. Backed by our industry-leading warranty, Pella Impervia replacement windows demand very little maintenance, offering exceptional beauty and performance year after year.

Pella® Impervia® Series

  • Constructed from Duracast®—the strongest, most durable material available in windows
  • Impressive performance
  • The quality 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
Beautiful custom home features Pella fiberglass windows

Discover fiberglass windows at your nearby Pella showroom or click below to schedule a free, in-home consultation and find the windows that best fit your home.



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