Fiberglass Windows

Created from patented Duracast® fiberglass composite, Pella® Impervia® fiberglass windows are a cost-friendly, low-maintenance alternative to wood replacement windows. They resist warping in the summer and defend against winter weather, and are available in an array of color options to accompany your home’s design.

At Pella of San Antonio, we have discovered 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 reliability and notable energy efficiency that are inherent to a fiberglass window. Covered by our industry-leading warranty, Pella Impervia replacement windows demand very little maintenance, offering striking beauty and performance for years to come.

Pella® Impervia® Series

  • Constructed from Duracast®—the strongest, most durable material you can get in windows
  • Impressive performance
  • The stunning 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

Take a closer look at fiberglass windows at your closest Pella showroom or click below to plan a complimentary, in-home consultation and discover the windows that best fit your style.



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