FIBERGLASS WINDOWS by Pella Windows and Doors Made from extremely strong fiberglass, Pella Impervia® offers high-performing, low-maintenance fiberglass replacement windows that provide the quality appearance of painted wood. The Impervia line is made from Duracast, a patented fiberglass composite that fights warping in the summer months and doesn’t become brittle in the winter. If you’re in Gaithersburg and looking for top-of-the-line durability and high energy efficiency, while keeping 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 industry, Pella Impervia replacement windows need 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. Exceptional energy efficiency. FIBERGLASS WINDOW COLOR OPTIONS Pella Impervia fiberglass windows offer numerous color options to complement your space. We allow you the flexibility to pick the ideal 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, drop by our showroom in Gaithersburg or schedule a free in-home consultation and find the perfect windows for your home. Schedule Now!