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Pella® Impervia® Series Windows and Doors

The Pella® Impervia® line blends style with strength in fiberglass windows and patio doors that, as the name suggests, are impervious to almost all types of weather.

Impervia’s strength comes from Duracast®, our special fiberglass composite. It’s one of the toughest and most reliable materials available for fiberglass windows and patio doors1. Duracast resists weather from severe heat to frigid cold, making Pella Impervia windows and exterior doors excellent for all climates.

The outstanding insulating qualities of our fiberglass replacement windows and patio doors boost your home’s comfort and help reduce energy use. Optional foam-insulating frames may be installed on these ENERGY STAR®-certified windows and patio doors.

Pella Impervia windows and sliding patio doors come prefinished with a factory powder-coat finish that maintains its looks for the long haul—inside and out—with little care. With an array of colors to choose from, you’ll find windows and patio doors to reflect your home’s design, inside and out. Our environmentally friendly paint process virtually eliminates toxic chemicals, helping the air inside your home stay chemical-free.

Pella Impervia offers quality that you can count on and beauty that stands out. Plus, to top things off, they are supported by our limited warranty—one of the most thorough in the industry.2

Impervia Series dining room windows
Pella® Impervia® Series Catalog

Available Window Styles

Available Door Styles

Click below to schedule a free, in-home consultation or come by your convenient Pella showroom to look at these windows and patio doors in person.





1In testing performed in accordance with ASTM testing standards. Duracast® fiberglass composite from Pella has displayed superior performance in strength, ability to withstand heat and cold, and resistance to dents and scratches.
2Based on comparing written limited warranties of leading national wood window and wood patio door brands. See Pella written Limited Warranty for details, including exceptions and limitations, at pella.com/warranty, or contact Pella® Customer Service at 877-473-5527.