Pella® Impervia® Series Windows and Doors

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

Impervia’s strength comes from Duracast®, our patented fiberglass composite. It’s one of the strongest and most reliable materials available for fiberglass windows and patio doors1. Duracast defends against conditions from severe heat to frigid cold, making Pella Impervia windows and exterior doors exceptional for all seasons.

The impressive insulating properties of our fiberglass replacement windows and patio doors boost your home’s coziness 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 maintains its looks for the long haul—inside and out—with little maintenance. With a wide selection of colors to choose from, you’ll find windows and patio doors to match your home’s design, inside and out. Our environmentally friendly paint process virtually removes toxic chemicals, helping the air inside your room stay healthy.

Pella Impervia features quality that stands up and beauty that stands out. Plus, to top things off, they are backed by our limited warranty—one of the best in the industry.2

Pella® Impervia® Series
Pella® Impervia® Series Catalog

Available Window Styles

Available Door Styles

Click below to plan a complimentary, in-home consultation or visit your local Pella showroom to look at 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.