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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 strength comes from Duracast®, our unique fiberglass composite. It’s one of the sturdiest and most durable materials available for fiberglass windows and patio doors1. Duracast stands up to conditions from intense heat to subzero cold, making Pella Impervia windows and exterior doors exceptional for all seasons.

The outstanding insulating qualities of our fiberglass replacement windows and patio doors improve your home’s comfort and help conserve energy. Optional foam-insulating frames can 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 stays vibrant for the long haul—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 look, inside and out. Our environmentally friendly paint process practically removes toxic chemicals, helping the air inside your house stay clean.

Pella Impervia features quality that stands up and beauty that stands out. Also, to top things off, they are supported 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 plan a free, in-home consultation or stop by your local 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.