Pella® Impervia® Series Windows and Doors

The Pella® Impervia® line blends style with endurance 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 unique fiberglass composite. It’s one of the strongest and most reliable materials in the market for fiberglass windows and patio doors1. Duracast defends against weather from extreme heat to freezing cold, making Pella Impervia windows and exterior doors exceptional for all seasons.

The superior insulating properties of our fiberglass replacement windows and patio doors improve your home’s livability 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 stays vibrant for years—inside and out—with little maintenance. With a wide selection of colors to explore, you’ll find windows and patio doors to reflect your home’s style, inside and out. Our environmentally friendly paint process virtually gets rid of toxic chemicals, helping the air inside your room stay healthy.

Pella Impervia offers quality that stands up and beauty that stands out. Also, to top things off, they are backed by our limited warranty—one of the best 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 stop by your local Pella showroom to check out 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.