FIBERGLASS WINDOWS by Pella Windows and Doors Produced 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 battles warping in the summer months and doesn’t become brittle throughout winter. If you’re in Baltimore and searching for superior durability and energy efficiency, while maintaining the outstanding visual allure of a painted wood window, Pella Impervia is a great choice. Backed by one of the most extensive warranties in the industry, Pella Impervia replacement windows require 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 home. 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 a closer look at the Pella Impervia line, drop by our showroom in Baltimore or schedule a free in-home consultation and find the perfect style for your room. Schedule Now!