FIBERGLASS WINDOWS by Pella Windows and Doors Created from incredibly durable 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 battles warping in the summer months and doesn’t become brittle throughout winter. If you’re in Grand Rapids and searching for the best durability and exceptional energy efficiency, while keeping the outstanding visual appeal of a painted wood window, then Pella Impervia windows are for you. Backed by one of the most extensive warranties in the business, 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. Outstanding energy efficiency. FIBERGLASS WINDOW COLOR OPTIONS Pella Impervia fiberglass windows offer countless color options to complement your home. We allow you the flexibility to pick the best 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, stop by our showroom in Grand Rapids or schedule a free in-home consultation and find the perfect style for your space. Schedule Now!