TotalBoat TotalProtect epoxy barrier coat and primer is designed as a robust epoxy barrier coat, providing great adhesion, preventing osmotic blisters, and creating a great substrate for paint to stick to. It is not designed as a substrate to tolerate structural loads. TotalProtect is not a viable substrate for any structural fiberglass applications.
However, for non-structural applications, fiberglass can be applied over TotalProtect after a thorough cleaning, and after being heavily abraded to achieve the best mechanical bond possible. Polyester resin is not recommended to use as an adhesive material for the fiberglass in this type of application.