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Pella® Impervia® Series Windows and Doors

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

Impervia’s durability comes from Duracast®, our special fiberglass composite. It’s one of the toughest and most well-built materials obtainable for fiberglass windows and patio doors1. Duracast resists conditions from extreme heat to subzero cold, making Pella Impervia windows and exterior doors exceptional for all seasons.

The impressive insulating properties of our fiberglass replacement windows and patio doors improve coziness and help reduce energy use. Optional foam-insulating frames can be added to 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 maintenance. With many colors to select, you'll find windows and patio doors to complement your clients' tastes. Our environmentally friendly paint process practically removes toxic chemicals, helping indoor air stay healthy.

Pella Impervia features quality that you can rely on and beauty that stands out. And 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

Get a quote for your project now or visit our 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.