Onduline Bitumen Corrugated roofing Ridge - Brown - 1m x 420mm x 3mm Bitumen Corrugated roofing sheets have been and are a popular material used for a range of roofing applications. They are a great choice for use on sheds, garages, garden outbuildings and agricultural buildings. These Bitumen Ridges are a great way to top the apex of your roof professionally. The ridge helps seal the top of your roof where the bitumen sheets meet. This helps finalise the top of your structure and improves the weatherproofing of your bitumen roof. These ridges are coloured to match your roofing sheets, helping complete that aesthetic appeal. When installed correctly, Bitumen roofs provide excellent waterproof capabilities and ensure protection against water infiltration, helping to prevent leaks and water damage to your structure. The corrugated design of these sheets allows for superior strength and excellent water runoff compared to flat sheets. The design allows for the sheets to be lightweight,