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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 implies, are impervious to practically all types of weather.

Pella’s proprietary fiberglass is the strongest material for windows, engineered for lasting durability.1 Our exclusive fiberglass will never rot or corrode, and it resists dents, bends and breaks. Duracast stands up to weather from intense heat to freezing cold, making Pella Impervia windows and exterior doors exceptional for all climates.

The impressive insulating qualities of our fiberglass replacement windows and patio doors enhance coziness and help reduce energy use. Optional foam-insulating frames can be installed 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 maintains its looks for years—inside and out—with little maintenance. With a wide selection of colors to explore, you'll find windows and patio doors to complement your clients' styles. Our environmentally friendly paint process virtually eliminates toxic chemicals, helping indoor air stay healthy.

Pella Impervia offers 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 in person.





1Pella’s proprietary fiberglass material has displayed superior strength over wood, vinyl, aluminum, wood/plastic composites, and other fiberglass materials used by leading national brands in tensile and 3-point bend tests performed in accordance with ASTM D638 and D790 testing standards.
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.