Hambleside Danelaw universal roll out ventilation system provides for full mechanical fixing of ridge and hip tiles, compliant with the requirements of BS 5534 and BS 5250. The ventilated membrane has broader corrugated adhesive edge strips, designed to accommodate a greater range of roof pitches and ridge and hip tile types than others on the market.Unique universal design is adaptable to fit all commonly available ridge tile and slate types.Our unique, patented gasket features weatherproof, continuous integrated water channels and self-sealing detail for the 100mm stainless steel fixing screws, giving improved long term reliability and eliminating the need for additional sealing washers.Provides 5,000mm2 airflow area per linear metre to both roof slopes making it ideally suited to cold and warm roofs and for batten space ventilation. No special tools are required for installation. Optional componentsHip trays - universal hip trays provide quick and easy alignment of hip tiles. Available in 1.65m code: HDL HT165 and 3m code: HDL HT300.Tile clips - available for connecting small cuts of interlocking tiles on all dry fix hip & valley systems code: HD DVC.