The Onduline Black Bitumen Ridge piece (L)1000mm (W)420mm is a durable roofing accessory designed for use with Onduline bitumen roofing sheets. Ideal for creating a watertight seal along the apex of pitched roofs, this ridge piece offers reliable protection against rain and harsh weather. Its lightweight yet robust bitumen construction ensures easy installation and long-lasting performance. The black finish complements most roof styles, making it suitable for sheds, garages, and outbuildings. With its generous length and width, it provides excellent coverage and stability to your roof structure.