Profile: Retterbush Fiberglass Corp. specializes in fiberglass molding. Our fiberglass reinforced plastic molding processes focus on low pressure sheet molding compounds, resin transfer molding, hand lay-up & spray-up. Our hand lay-up & spray-up molding methods are used for making boats, tanks, housings and machine components. We offer molds made of materials like polyester, epoxy, aluminum, and steel. We also offer trash box, tool box, pool box, dock box, deck box, firewood box, jet ski and snowmobile trailer box.