FIBERGLASS WINDOWS by Pella Windows and Doors Produced from amazingly durable fiberglass, Pella Impervia® offers high-performing, low-maintenance fiberglass replacement windows that deliver the quality look 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 throughout winter. If you’re in Haverhill and looking for the best durability and exceptional energy efficiency, while maintaining the outstanding visual appeal of a painted wood window, then Pella Impervia windows are for you. Backed by one of the best warranties in the industry, Pella Impervia replacement windows require little to no maintenance, ensuring that your windows will look outstanding for many years. Pella Impervia® Pella Impervia® Incredibly strong fiberglass Duracast®. An extremely durable material available in windows and doors. Excellent performance. Outstanding energy efficiency. FIBERGLASS WINDOW COLOR OPTIONS Pella Impervia fiberglass windows offer countless color options to complement your room. We allow you the flexibility to pick the perfect 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, stop by our showroom in Haverhill or schedule a free in-home consultation and find the perfect fit for your room. Schedule Now!