Pella® Impervia® Series Windows and Doors

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

Impervia’s toughness comes from Duracast®, our special fiberglass composite. It’s one of the strongest and most reliable materials available for fiberglass windows and patio doors1. Duracast stands up to conditions from severe heat to frigid cold, making Pella Impervia windows and exterior doors excellent for all seasons.

The outstanding insulating features of our fiberglass replacement windows and patio doors enhance your home’s comfort and help conserve energy. Optional foam-insulating frames could 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 stays vibrant for a long time—inside and out—with little maintenance. With a wide selection of colors to choose from, you’ll find windows and patio doors to reflect your home’s style, inside and out. Our environmentally friendly paint process practically gets rid of toxic chemicals, helping the air inside your room stay clean.

Pella Impervia offers quality that you can count on and beauty that stands out. Also, to top things off, they are secured by our limited warranty—one of the best 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 no-cost, in-home consultation or visit your nearby Pella showroom to check out these windows and patio doors in detail.





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.