Pella® Impervia® Series Windows and Doors

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

Impervia’s durability comes from Duracast®, our patented 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 extreme heat to subzero cold, making Pella Impervia windows and exterior doors excellent for all regions.

The impressive insulating features of our fiberglass replacement windows and patio doors enhance your home’s livability and help reduce energy use. 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 vibrant for the long haul—inside and out—with little care. With many colors to select, you’ll find windows and patio doors to reflect your home’s design, inside and out. Our environmentally friendly paint process practically eliminates toxic chemicals, helping the air inside your room stay chemical-free.

Pella Impervia offers 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
Pella® Impervia® Series Catalog

Available Window Styles

Available Door Styles

Click below to schedule a free, in-home consultation or visit your convenient Pella showroom to check out these windows and patio doors up close.





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.