Fiberglass Windows

Crafted from patented Duracast® fiberglass composite, Pella® Impervia® fiberglass windows are a budget-friendly, low-maintenance alternative to wood replacement windows. They protect from warping in the summer and stand up to winter weather, and are available in an array of color options to match your taste.

At Pella of Decatur, 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-of-the-line durability and notable energy efficiency that come with a fiberglass window. Backed by our industry-leading warranty, Pella Impervia replacement windows demand little to no maintenance, resulting in striking beauty and performance season after season.

Pella® Impervia® Series

  • Constructed from Duracast®—the strongest, most durable material you can get 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

Look into fiberglass windows at your closest Pella showroom or click below to schedule a no-cost, in-home consultation and discover the windows that best fit your style.