Pella® Impervia® Series Windows and Doors

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

Impervia’s durability comes from Duracast®, our patented fiberglass composite. It’s one of the toughest and most durable materials in the market for fiberglass windows and patio doors1. Duracast resists temperatures from extreme heat to frigid cold, making Pella Impervia windows and exterior doors great for all seasons.

The impressive insulating qualities of our fiberglass replacement windows and patio doors enhance your home’s coziness and help save on energy. Optional foam-insulating frames may be included on these ENERGY STAR®-certified windows and patio doors.

Pella Impervia windows and sliding patio doors arrive prefinished with a factory powder-coat finish that maintains its looks for a long time—inside and out—with little upkeep. With a wide selection of colors to select, you’ll find windows and patio doors to complement your home’s style, inside and out. Our environmentally friendly paint process virtually removes toxic chemicals, helping the air inside your room stay clean.

Pella Impervia brings quality that stands up and beauty that stands out. And to top things off, they are supported by our limited warranty—one of the strongest in the industry.2

Impervia Series
Pella® Impervia® Series Catalog

Available Window Styles

Available Door Styles

Click below to schedule a complimentary, in-home consultation or come by your convenient Pella showroom to check out 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.
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