Cover Board External Corner Joint Trim White

Cover Board External Corner Joint Trim White
135 Degree corner trims are used to hide the 10mm expansion gap that should be left between two boards at the corner of the eaves. They are usually found above a bay window on a roof. To enable the system to expand and contract correctly in a different range of temperatures, one side of any joint or corner on any PVC fascia installation should be glued to the board.