Used to bridge GRP to felt roofs, and create expansion joints on large roofs. The E280 is used to create expansion gaps on large roofs over 50m2, but will also create a ridge roll detail. A C5 closure should be used to cap the open ends. A gap should be under the trim with the flanges sitting flush on the roof deck each side. Nail the trim down, then tape and laminate the trim following the usual process. Apply PU adhesive and overlap to join trims.