I need to spec a traditional, horizontal pergola (12 x 14 cc, scroll ends, classic columns, painted etc.) for a residential project. I am thinking about going fiberglass. We have been using fiberglass columns for years, but this will be my first foray into horizontal beams/joists/slats. The client is not price sensitive, so I am looking for a high visual quality. I know they will work strucurally, but am concerned about the aesthetics and durability over time. Experiences? Manufacturer recomendations? Options?