The fascia board is the one mounted at the point where the roof meets the outer walls of the house and is often called the roofline. However most people refer to it by the name of the main board that carries the gutter – the fascia.
The fascia board is the long, straight board that runs along the lower edge of the roof. The fascia is fixed directly to the lower ends of the roof trusses and usually does all the work of supporting the lower edge of the bottom row of tiles. The fascia board also carries all the guttering.
This is no mean feat, especially when it is raining hard. In a downpour the roof of a 3-bed semi could be washing several gallons of water per second into its gutters.
The descriptions uPVC, PVCu and PVC ue are often used to describe PVC fascias, soffits and bargeboards. You probably know what PVC means. The “u” stands for “unplasticised”, meaning that it isn’t a pliable PVC like some kids toys etc, and the “e” stands for “expanded”. Expanded or foamed PVC produces a light, strong board that is thicker than an equivalent rigid PVC board.