EP Epoxy cures to a hard, tough, durable finish, providing stain, chemical and abrasion resistance for protection of concrete, plaster and fiberglass swimming pools, spas and slides. EP Epoxy cures to a high gloss-finish with excellent coverage rates, especially on previously painted epoxy surfaces. EP Epoxy has been a proven performer for more than 50 years. Because of their chemical cure, epoxies are the paints of choice for indoor pools.