There is a significant cost and amount of work that goes along with the use of fiberglass paint, so the cost that you are willing to put into the job is the first consideration. There are also different types of fiberglass, such as epoxy resin, for which epoxy-based paint will produce the best results. For polyester-based resin, polyester-based paint should be used. Using similar compounds will make the paint adhere better to the surface. here