FIBERGLASS WINDOWS by Pella Windows and Doors Made from incredibly strong fiberglass, Pella Impervia® offers high-performing, low-maintenance fiberglass replacement windows that provide the quality look 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 Greenfield and in the market for superior durability and exceptional energy efficiency, while still gaining the outstanding visual allure of a painted wood window, look no further than Pella Impervia. Backed by one of the best warranties in the business, Pella Impervia replacement windows involve little to no maintenance, ensuring that your windows will look amazing for years to come. 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 countless color options to complement your room. We allow you the flexibility to pick the ideal windows at a budget you can afford. Pella utilizes an environmentally friendly painting process that removes VOCs, keeping the air in your home healthier. If you want to take a closer look at the Pella Impervia line, stop by our showroom in Greenfield or schedule a free in-home consultation and find the perfect fit for your home. Schedule Now!