Slate, nail sickness and the weight of age
Some older buildings in Leicestershire were roofed in local Swithland slate, a hard-wearing stone from nearby quarries that is no longer easy to source. If your roof is a mix of old, thick slates in varied sizes, it is worth telling us so repairs can reuse sound pieces carefully and avoid damaging the rest.
The usual ageing problem on old slate is nail sickness, where the fixings corrode and slates slide down. The roof may look fine until a windy night shifts several at once. Chimneys on older houses carry lead and mortar flashings that crack, and valleys fill with moss. With the A50 close by and housing of many ages, we often see several roof types in one street.






