Pella® Impervia® Series Windows and Doors

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

Impervia’s toughness comes from Duracast®, our unique fiberglass composite. It’s one of the sturdiest and most reliable materials in the market for fiberglass windows and patio doors1. Duracast defends against weather from severe heat to freezing cold, making Pella Impervia windows and exterior doors great for all climates.

The outstanding insulating qualities of our fiberglass replacement windows and patio doors enhance your home’s coziness and help reduce energy use. Optional foam-insulating frames could be included on these ENERGY STAR®-certified windows and patio doors.

Pella Impervia windows and sliding patio doors are delivered prefinished with a factory powder-coat finish that stays looking great for a long time—inside and out—with little upkeep. With an array 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 removes toxic chemicals, helping the air inside your room stay clean.

Pella Impervia features quality that you can rely on 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

Impervia Series
Pella® Impervia® Series Catalog

Available Window Styles

Available Door Styles

Click below to schedule a free, in-home consultation or visit your local Pella showroom to see these windows and patio doors up close.





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.