Ridges And Flashings For every sheet profile there is a specific ridge and flashing for the relevant application. Ridges and flashings are available in GI, AZ, Painted Steel and Aluminium. In all cases, it is vital to have ample cover provided by the ridge and flashing and proper turn- up of the cladding underneath. Adapt the principles to suit your application. Mabati Rolling Mills Limited has a range of ridges. We also offer custom made ridges to meet your requirements. The ridges are available in 30G and 28G and the flashings are available in 26G.