Does Nexgen Ceramic Spray work on fiberglass? March 12, 2024 13:32 Yes, Nexgen Ceramic Spray works great on fiberglass, including boats. Related to ceramic Related articles What is the cure time for Carbon Flex? How do I prepare my car before applying Nexgen Ceramic Spray? What surfaces does Nexgen Ceramic Spray work on? Removing wax from your before before applying ceramic spray. Ceramic Spray Instructions