Pella® Impervia® Series Windows and Doors

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

Impervia’s strength comes from Duracast®, our patented fiberglass composite. It’s one of the toughest and most well-built 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 exceptional for all seasons.

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

Pella Impervia windows and sliding patio doors arrive prefinished with a factory powder-coat finish that stays vibrant for the long haul—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 practically eliminates toxic chemicals, helping the air inside your room stay healthy.

Pella Impervia features quality that you can count on and beauty that stands out. Plus, to top things off, they are secured 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 free, in-home consultation or stop by your nearby 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.