The Church of St Laurence has a probable twelfth-century nave, a fifteenth-century west tower and ten bells, and its south porch carries a stone-slab roof. Whatever the building, a covering like that follows rules that are different from tile or slate.
Q2.1Why is stone slab handled differently?
Stone slabs are heavy, thick and uneven, and each one sits on its neighbours in a pattern that took a mason time to set out. When a slab cracks or slips, the cure is a matching replacement and fresh bedding, not a patch of a different material. Where a whole slope has gone, the slabs come off, are sorted by size and go back with the heaviest along the eaves and the lightest near the top. Any that have broken are replaced in stone matching theirs for type and tone, because two different stones do not belong on one roof. Our Cotswold stone roofing page explains how stone slates are graded and laid in diminishing courses, which is useful background for any stone roof.
Q2.2What about weight and structure?
Stone is heavy, so replacing it with a lighter material changes the load on the walls, and replacing a lighter covering with stone can overload timbers that were not built for it. Under the Planning Portal guidance, a covering 15 per cent or more heavier needs Building Regulations approval, so the rafters are checked first and we explain what they can carry.
Q2.3Who looks after the church itself?
A parish church roof is the business of the parish and its own architect. St Laurence's serves the parish for the Church of England, so work on it goes through the diocesan faculty system rather than listed building consent from the council. What we take on in the village are houses and outbuildings, each surveyed and quoted in writing. If your own home is listed, any change to a stone roof needs listed building consent, and the council will want to see the same stone.
Tinteyns Manor House is another example of stonework with brick chimneys: a mixed building that needs a roofer who reads each part separately. Its stone walls, brick shafts and roof timbers each age differently, and a sound repair respects each of them. If you own something similar, expect the survey to include the chimneys, the lead and the roof structure, not only the covering.