Fiberglass Windows

Created from patented Duracast® fiberglass composite, Pella® Impervia® fiberglass windows are a budget-friendly, low-maintenance alternative to wood replacement windows. They resist warping in the heat and shield your home from winter weather, and are offered in an array of color types to accompany your home’s design.

At Pella of Denver, we have learned that Pella Impervia windows are a great choice for homeowners who want the stunning look of a painted wood window with the top-of-the-line durability and impressive energy efficiency that are inherent to a fiberglass window. Backed by our industry-leading warranty, Pella Impervia replacement windows demand very little maintenance, offering remarkable beauty and performance year after year.

Pella® Impervia® Series

  • Constructed from Duracast®—the strongest, most durable material you can have in windows
  • Exceptional 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

Take a closer look at fiberglass windows at your nearby Pella showroom or click below to schedule a free, in-home consultation and uncover the windows that meet the needs of your budget.



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