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Pella® Impervia® Series Windows and Doors

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

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

The outstanding insulating properties of our fiberglass replacement windows and patio doors boost your home’s coziness and help save on energy. Optional foam-insulating frames may be added to these ENERGY STAR®-certified windows and patio doors.

Pella Impervia windows and sliding patio doors are delivered prefinished with a factory powder-coat finish that stays vibrant for the long haul—inside and out—with little care. With a wide selection of colors to choose from, you’ll find windows and patio doors to reflect your home’s look, inside and out. Our environmentally friendly paint process practically gets rid of toxic chemicals, helping the air inside your room stay clean.

Pella Impervia features quality that you can count on and beauty that stands out. Also, to top things off, they are backed by our limited warranty—one of the strongest in the industry.2

Impervia Series dining room windows
Pella® Impervia® Series Catalog

Available Window Styles

Available Door Styles

Click below to set up a complimentary, in-home consultation or visit 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.