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Pella® Impervia® Series Windows and Doors

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

Impervia’s durability 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 temperatures from intense heat to frigid cold, making Pella Impervia windows and exterior doors excellent for all climates.

The outstanding insulating qualities of our fiberglass replacement windows and patio doors boost your home’s comfort and help reduce energy use. Optional foam-insulating frames may 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 a long time—inside and out—with little upkeep. With an array of colors to choose from, you’ll find windows and patio doors to complement your home’s design, inside and out. Our environmentally friendly paint process practically eliminates toxic chemicals, helping the air inside your house stay healthy.

Pella Impervia offers quality that you can rely on and beauty that stands out. Also, to top things off, they are backed by our limited warranty—one of the strongest 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 free, in-home consultation or visit your nearby Pella showroom to see 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.