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 strength comes from Duracast®, our patented fiberglass composite. It’s one of the sturdiest and most well-built materials obtainable for fiberglass windows and patio doors1. Duracast defends against temperatures from intense heat to freezing cold, making Pella Impervia windows and exterior doors exceptional for all regions.

The outstanding insulating qualities of our fiberglass replacement windows and patio doors improve your home’s comfort 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 a long time—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 style, inside and out. Our environmentally friendly paint process virtually eliminates toxic chemicals, helping the air inside your house stay healthy.

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

Impervia Series
Pella® Impervia® Series Catalog

Available Window Styles

Available Door Styles

Click below to set up a free, 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.