The Tegral Thrutone Fibre Cement Coloured Ridge Tile - Blue/Black is designed to complement the overall appearance of a Thrutone slate roof. These safe and durable ridge tiles are usually used at the top of the roof or at the gable ends, and can also incorporate vents for ventilating the roof space. This tile comes with a 30 year structural guarantee. Thrutone fibre cement ridges comply with SR82 & BS5534