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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 suggests, 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 resists temperatures from severe heat to frigid cold, making Pella Impervia windows and exterior doors great for all climates.

The superior insulating qualities of our fiberglass replacement windows and patio doors improve comfort 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 arrive prefinished with a factory powder-coat finish that stays vibrant for years—inside and out—with little care. With an array of colors to explore, you'll find windows and patio doors to complement your clients' styles. Our environmentally friendly paint process essentially eliminates toxic chemicals, helping indoor air stay healthy.

Pella Impervia offers quality that you can count on and beauty that stands out. And to top things off, they are secured 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

Request a quote for your project now or visit our showroom to see these windows and patio doors in detail.





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.