FIBERGLASS WINDOWS by Pella Windows and Doors Made from extremely tough fiberglass, Pella Impervia® offers high-performing, low-maintenance fiberglass replacement windows that have the quality appearance of painted wood. The Impervia line is made from Duracast, a patented fiberglass composite that resists warping in the summer months and doesn’t become brittle during the winter. If you’re in Birmingham and looking for the best durability and high energy efficiency, while maintaining the impeccable visual attraction of a painted wood window, then Pella Impervia windows are for you. Covered by one of the top warranties in the industry, Pella Impervia replacement windows require little to no maintenance, ensuring that your windows will look outstanding for many years. Pella Impervia® Pella Impervia® Incredibly strong fiberglass Duracast®. An extremely durable material available in windows and doors. Excellent performance. Exceptional energy efficiency. FIBERGLASS WINDOW COLOR OPTIONS Pella Impervia fiberglass windows offer a variety of color options to complement your space. We allow you the flexibility to pick the best windows at a budget you can afford. Pella utilizes an environmentally friendly painting process that greatly reduces VOCs, keeping the air in your home healthier. If you want a closer look at the Pella Impervia line, come by our showroom in Birmingham or schedule a free in-home consultation and find the perfect windows for your space. Schedule Now!