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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 nearly 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 severe heat to frigid cold, making Pella Impervia windows and exterior doors exceptional for all regions.

The outstanding insulating features of our fiberglass replacement windows and patio doors boost comfort and help conserve energy. Optional foam-insulating frames can be included 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 looking great for a long time—inside and out—with little upkeep. With a wide selection of colors to explore, you'll find windows and patio doors to complement your clients' tastes. Our environmentally friendly paint process virtually removes toxic chemicals, helping indoor air stay clean.

Pella Impervia offers quality that you can count on and beauty that stands out. Plus, 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 come by 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.