We had a new home built in 2012 and had all woodgrain fiberglass exterior doors installed. The contractor had finished the doors using a gel stain and poly top coat. On two doors with direct sunlight exposure the finish had almost completely flaked off in one year. I need to refinish these two doors. I've bought exterior UV resistant poly and was considering mixing my stain into the poly rather than putting gel stain under it to hopefully improve the adhesion of the poly to the fiberglass. Has anyone had experience with finishing fiberglass doors exposed to direct sun?
Gary