FIBERGLASS WINDOWS by Pella Windows and Doors Produced from amazingly durable fiberglass, Pella Impervia® offers high-performing, low-maintenance fiberglass replacement windows that deliver the quality appearance of painted wood. The Impervia line is made from Duracast, a patented fiberglass composite that battles warping in the summer months and doesn’t become brittle throughout winter. If you’re in Northern Virginia and searching for top-of-the-line durability and high energy efficiency, while maintaining the outstanding visual allure of a painted wood window, then Pella Impervia windows are for you. Protected by one of the top warranties in the business, Pella Impervia replacement windows involve little to no maintenance, ensuring that your windows will look great for many years. Pella Impervia® Pella Impervia® Incredibly strong fiberglass Duracast®. An extremely durable material available in windows and doors. Excellent performance. Outstanding energy efficiency. FIBERGLASS WINDOW COLOR OPTIONS Pella Impervia fiberglass windows offer numerous color options to complement your room. We allow you the flexibility to pick the best 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 a closer look at the Pella Impervia line, drop by our showroom in Northern Virginia or schedule a free in-home consultation and find the perfect fit for your space. Schedule Now!