Lowe's, Zoro, U.S. Plastics, The Home Depot and Alibaba.com all have 4-by-8-foot fiberglass panels for sale online. Another place to purchase fiberglass is at a local building supply chain such as a nearby Menards or a local privately owned building supply store.
ACP Composites also offers a large selection of fiberglass panels, including pigmented panels, at its online store. Flat fiberglass panels are most often used for interior walls, and corrugated fiberglass sheets are typically used for applications such as roofing. Since its introduction into the market, fiberglass has been a great alternative to sheet metal mainly because of its lighter weight.