FIBERGLASS WINDOWS by Pella Windows and Doors Made from extremely tough fiberglass, Pella Impervia® offers high-performing, low-maintenance fiberglass replacement windows that deliver the quality finish that looks like 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 Des Moines and in the market for top-of-the-line durability and high energy efficiency, while still gaining the impeccable visual attraction of a painted wood window, look no further than Pella Impervia. Backed by one of the best warranties in the industry, Pella Impervia replacement windows need little to no maintenance, ensuring that your windows will look outstanding year after year. 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 countless color options to complement your space. We allow you the flexibility to pick the perfect 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 get a closer look at the Pella Impervia line, stop by our showroom in Des Moines or schedule a free in-home consultation and find the perfect windows for your room. Schedule Now!