High Flow Tile Vents are a range of high-flow quality ventilating tiles to suit the most popular interlocking roof tiles with a minimum pitch of 20°. They can be used for roof space ventilation at high or low level to reduce the build-up of mould growth and structural damage in the roof space, caused by damp, poorly ventilated roofs. High Flow Tile vents provide 15,000mm2 of ventilation coverage. Alternatively, they can also be used as a terminal for soil and ventilation pipes as well as mechanical extraction systems when used with an adaptor. Available in dark brown and grey to match the leading concrete interlocking tiles on the market, including Stonewold, Wessex, Regent, Bold Roll and Redland Delta.