Chapter one
Clay tile roofs around Church Lane
Clay tile is the predominant covering in the Church Lane conservation area, so a repair starts by copying the roof you already have.
Clay tiles hang on battens, the thin timber laths that run across the rafters, and each course overlaps the one below it. If a single tile slips, the course above loses its bearing and rain gets in. The appraisal for the Church Lane conservation area records clay tile as the predominant roofing material, with slate and thatch on a limited number of buildings. Repairs there tend to be clay for clay, and how well the new tile matches is visible from the lane itself, which is why we treat it as half the job. A cottage roof that looks tidy from the road can still be hiding slipped tiles on the back slope, so we walk the whole roof and not just the face that is seen.
At a glance
- Church Lane names clay tile its predominant covering
- BS 5534 expects ridge tiles mechanically fixed too
- Old clay roofs are judged by condition, not age

1.1 How old is too old for clay
Marley quotes a tested minimum life expectancy of 60 years for its clay tiles, while MyBuilder puts replacement at 40 to 60 years. The Building Conservation Directory takes a harder line on old peg-tile roofs, where 60 years is clearly no dependable yardstick. We therefore read each roof as it stands. From the loft we check for pinpoints of daylight, for damp along the battens and for tiles whose nibs, the small lugs that hook over the batten, have snapped off. From outside we study the tile faces: clay that sheds flakes in layers is wearing out, whereas a tile that has merely slid can be set back and fixed.

1.2 Matching the clay, fixing the ridge
Colour, camber and thickness vary between hand-made and machine-made clay, so a fresh tile dropped into an old slope can stand out for years. On a repair we reuse every sound tile and bring in the nearest match for the gaps, working from the photographs we take of your roof.
Along the ridge, where two slopes meet at the top, and on the verge, the exposed edge at a gable end, wind finds its first hold. The 2014 revision of BS 5534 stopped treating mortar as enough on its own for ridge and hip tiles; each is now mechanically fixed as well, though a bedded ridge with fixings remains acceptable. Sound ridge tiles come off, get cleaned, and go back on with those fixings, and our ridge tile repairs page sets out the options. If a whole slope is tired, the pitched roofing page covers re-covering.
Facts for a clay tile roof
- Clay tile life
- Tested minimum of 60 years, per Marley
- Fixing of ridge and hip tiles
- Fixed mechanically as well since BS 5534's 2014 revision
- Single-lap tile
- One nail or clip for every tile (Wienerberger)
- Clay plain tile pitch
- 30 to 40 degrees minimum, by tile (Marley)
- Heritage roofs
- BS 5534 amendment says its advice may not suit them (Marley)
Source: Marley; Wienerberger; Building Conservation Directory, fetched October 2026





