Lead ridge is a traditional heritage method of weathering the apex of a roof. A wood-cored timber roll is fixed into the ridge tree and sheet lead is manipulated around the wood roll and extended past the top of roof tile. A correct installed lead ridge has been known to last over a century and outlast the roofing material it is weathering. Lead is not limited to the ridge as it can also be used on the hips of the roof. Lead Ridge and lead hips are generally used on slate roofs however, they can also be used on both tiles and certain metal roofs. The size of the timber roll increases as the size of the roof increases to ensure the lead ridge is aesthetically pleasing.