Chapter 1: Can a worn clay-tiled roof in the Church Oakley conservation area be mended without replacing it?
What we find
The council's appraisal describes orange and red tiles over brick and timber frame, and many of these roofs are older than anyone living in them. Handmade clay tiles weather unevenly: the faces flake after frost, the nibs (the small lugs that hook each tile over its batten) snap, and tiles slide down when their fixings corrode. Where one tile goes, the course above it is left unsupported.
Leaks on this kind of roof tend to be slow. A tile slips, the felt below, if there is any, takes the water for a few winters, and the first thing you notice is a brown ring on a bedroom ceiling or a soft patch where a rafter meets the wall. By then the batten under the gap is likely to be damp.
What we fix
In most cases we repair. We strip only the damaged area, bin nothing that is still sound, and match the gaps from reclaimed stock chosen for colour and age rather than from a catalogue. New battens go in where the old ones have rotted, and each tile is secured with a modern fixing in place of a corroded nail.
We recommend a full re-cover only where the whole slope is failing, and we explain why with photographs. In a conservation area the covering matters as much as the leak, so we put the proposal in writing and suggest you show it to the council before work is booked. Our pitched roofing service page describes how a strip and re-lay is staged.