Pella® Impervia® Series Windows and Doors

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

Impervia’s toughness comes from Duracast®, our special fiberglass composite. It’s one of the sturdiest and most well-built materials available for fiberglass windows and patio doors1. Duracast defends against temperatures from extreme heat to subzero cold, making Pella Impervia windows and exterior doors great for all regions.

The impressive insulating features of our fiberglass replacement windows and patio doors enhance your home’s coziness and help conserve energy. Optional foam-insulating frames can be added to 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 a long time—inside and out—with little care. With many colors to explore, you’ll find windows and patio doors to complement your home’s look, inside and out. Our environmentally friendly paint process practically gets rid of toxic chemicals, helping the air inside your home stay chemical-free.

Pella Impervia features quality that stands up and beauty that stands out. Plus, to top things off, they are secured 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 plan a complimentary, in-home consultation or visit your convenient Pella showroom to look at these windows and patio doors up close.





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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