Pella® Impervia® Series Windows and Doors

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

Impervia’s durability comes from Duracast®, our patented fiberglass composite. It’s one of the strongest and most reliable materials obtainable for fiberglass windows and patio doors1. Duracast stands up to weather from severe heat to subzero cold, making Pella Impervia windows and exterior doors exceptional for all climates.

The impressive insulating qualities of our fiberglass replacement windows and patio doors improve your home’s coziness and help conserve energy. Optional foam-insulating frames can be installed on 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 years—inside and out—with little care. With a wide selection of colors to explore, you’ll find windows and patio doors to match your home’s look, inside and out. Our environmentally friendly paint process practically gets rid of toxic chemicals, helping the air inside your home stay clean.

Pella Impervia brings quality that you can count on and beauty that stands out. Plus, to top things off, they are supported 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 plan a no-cost, in-home consultation or stop by your convenient 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.