FIBERGLASS WINDOWS by Pella Windows and Doors Created from extremely durable 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 during the winter. If you’re in Kalamazoo and in the market for top-of-the-line durability and high energy efficiency, while keeping the exceptional visual allure of a painted wood window, Pella Impervia is a great choice. 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 great for many years. Pella Impervia® Pella Impervia® Incredibly strong fiberglass Duracast®. An extremely durable material available in windows and doors. Excellent performance. Excellent energy efficiency. FIBERGLASS WINDOW COLOR OPTIONS Pella Impervia fiberglass windows offer numerous color options to complement your home. We allow you the flexibility to pick the ideal windows at a budget you can afford. Pella utilizes an environmentally friendly painting process that eliminates VOCs, keeping the air in your home healthier. If you want a closer look at the Pella Impervia line, drop by our showroom in Kalamazoo or schedule a free in-home consultation and find the perfect style for your home. Schedule Now!