Fiberglass Windows

Made 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 summer and defend against winter weather, and are available in a variety of color options to match your home.

At Pella of Boise, we have discovered that Pella Impervia windows are a great choice for homeowners who want the impressive look of a painted wood window with the top-notch dependability and notable energy efficiency that come with a fiberglass window. Covered by our industry-leading warranty, Pella Impervia replacement windows require very little maintenance, offering exceptional beauty and performance for years to come.

Pella® Impervia® Series

  • Made from Duracast®—the strongest, most durable material available in windows
  • Exceptional 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
Beautiful custom home features Pella fiberglass windows

Look into fiberglass windows at your nearby Pella showroom or click below to book a complimentary, in-home consultation and uncover the windows that best fit your budget.