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Pella® Impervia® Series Windows and Doors

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

Impervia’s strength comes from Duracast®, our unique fiberglass composite. It’s one of the strongest and most reliable materials in the market for fiberglass windows and patio doors1. Duracast defends against conditions from severe heat to frigid cold, making Pella Impervia windows and exterior doors exceptional for all climates.

The impressive insulating properties of our fiberglass replacement windows and patio doors boost coziness and help save on 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 looking great for the long haul—inside and out—with little care. With a wide selection of colors to select, you’ll find windows and patio doors to complement your clients' tastes, inside and out. Our environmentally friendly paint process virtually eliminates toxic chemicals, helping indoor air stay healthy.

Pella Impervia features quality that stands up and beauty that stands out. Plus, to top things off, they are backed by our limited warranty—one of the most thorough 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 look at 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.