Chapter one
Capel's clay tiles and how long they last
Brick and tile were made near Capel, so a clay roof faces two tests: is the tile still sound, and what holds it on?
Clay is the story of Capel, in the ground and on the roof. The county history says most of the parish lies on Wealden Clay and records small brick and tile works in a farming district, and the Clock House Brick Company opened south of Capel in 1933. It would be no surprise to find fired clay on a Capel house, though only a survey of the roof itself can say what covers it. Where it is clay tile, the questions never change: is the tile still sound, and is whatever holds it on?
At a glance
- The Clock House works opened south of Capel in 1933
- Frost damage shows as flaking tile faces
- Published lifespans are ranges, never promises

1.1 Judging the tile
Clay tiles rarely wear evenly. A frost-damaged face flakes away in layers, a cracked tile lets water pass, and one that sounds dull when tapped may be hairline-cracked right through. The nibs that hang each tile from its batten, and the nails that steady the course, tend to give way before the clay does. So we lift a few tiles in representative spots, check the battens beneath for rot, and photograph what we see. Lifespan figures help only as a frame, and the table sets out the published ones. None is a promise for your particular roof, which is why the survey carries more weight than the date on the deeds.

1.2 Matching what is already there
Where a repair is needed, new tiles must sit in the old slope without announcing themselves. Hand-made clay varies in colour and camber, so we match by size, texture and tone, and scatter replacements through the slope in place of one obvious patch. Underneath, torn or missing underlay is renewed as the tiles are rehung. For a leak beside a chimney or along a valley, the tile may be perfectly good and the lead around it the fault, which is why we trace the water first and recommend afterwards. Our pitched roofing page explains how a clay-tiled slope is stripped, re-battened and covered again.
Ridge and hip tiles are the highest and most exposed on any clay slope. After the 2014 revision of BS 5534, a ridge or hip tile held by mortar alone no longer meets expectations, and Marley advises that all bedded tiles and fittings include mechanical fixings. Where an old ridge is sound, the tiles can come off, be cleaned and go back on a fresh bed with their fixings, which spares you new ones that would look out of place beside the weathered clay below. Where the tiles themselves have split, new ones are sourced to match the colour before any are ordered.
Clay tile lifespans, as published
- Modern clay tile
- Minimum life expectancy of 60 years (Building Research Establishment finding, via Marley)
- Replacement guide
- Clay tiles replaced after 40 to 60 years (MyBuilder)
- Old peg-tile roofs
- The Building Conservation Directory calls 60 years an unreliable guide
- Meaning
- A typical range, never a guarantee for one roof
Source: Marley, 2016; MyBuilder slate roof cost guide, updated 21/08/2026; Building Conservation Directory





