FIBERGLASS WINDOWS by Prairie Pella Wyoming LLC Made from amazingly strong fiberglass, Pella Impervia® offers high-performing, low-maintenance fiberglass replacement windows that provide 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 throughout winter. If you’re in Casper and searching for top-of-the-line durability and energy efficiency, while maintaining the impeccable visual appeal of a painted wood window, then Pella Impervia windows are for you. Backed by one of the top 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. Excellent energy efficiency. FIBERGLASS WINDOW COLOR OPTIONS Pella Impervia fiberglass windows offer a variety of color options to complement your space. We allow you the flexibility to pick the best 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 to take a closer look at the Pella Impervia line, come by our showroom in Casper or schedule a free in-home consultation and find the perfect windows for your space. Schedule Now!