My neighbour has PVC-U fascia and soffits, I noticed the boards have joints. Why is this?
All fascia, soffit and cladding boards are manufactured in five metre lengths. This length is universal and applies to all product manufacturers. Where a longer length is required a joining strip/cover is used. All PVC-U fascia and soffit boards are subject to thermal expansion. At every joint a small gap is left to allow for this movement. Without this gap the boards could potentially buckle. A joining strip is used to cover this gap so it is not seen.