Fiberglass Windows

Crafted 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 heat and stand up to winter weather, and are offered in an array of color options to accompany your home.

At Pella of Ketchum, we have found that Pella Impervia windows are a great choice for homeowners who want the warm look of a painted wood window with the superior dependability and impressive energy efficiency that come with a fiberglass window. Backed by our industry-leading warranty, Pella Impervia replacement windows demand little to no maintenance, ensuring striking beauty and performance for years to come.

Pella® Impervia® Series

  • Created from Duracast®—the strongest, most durable material you can get in windows
  • Exceptional performance
  • The quality 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

Discover fiberglass windows at your closest Pella showroom or click below to schedule a complimentary, in-home consultation and discover the windows that are right for your budget.