The short answer
A clay tile roof can usually be repaired tile by tile, because each tile is fixed on its own and can be lifted and replaced. The work is in the details: the right type of tile, a good colour match and a check that frost or old nails are not behind the failure. Clay has a BRE minimum life of 60 years, but a repair should rest on what the roof shows.
Plain tiles and pantiles
Two clay forms cover the repairs you are likely to meet. Plain tiles are small, flat and slightly curved, and they are laid in overlapping courses so that each course covers the joints of the one below. The roof is made of hundreds of them. Pantiles are larger and wave-shaped, with an S-profile that interlocks along the sides.
The distinction matters because they are repaired differently. A plain tile is slid out from under its neighbours and replaced with another of the same size. A pantile is lifted along its row, and the overlapping profile has to be eased apart without cracking the neighbours.
Each has its own minimum pitch. In Marley's data, the Canterbury clay tile needs 40 degrees, Ashdowne 35, the Single Camber and Hawkins ranges 30, and the Lincoln pantile 15. These are product figures from one maker, so they are a guide and not a rule for every tile. The wider list is on our minimum pitch page.
Knowing which type you have comes before anything else. If you are not sure, send a photograph of a tile, ideally the edge or the underside.
Frost damage, matching and cracked tiles
Clay is a fired material, and a clay tile that has soaked up water can shed a layer of its face when the water freezes. Met Office averages for South Farnborough (1991 to 2020) include around 53 air-frost days, so freezing is part of life for any roof in the area. The first sign is a tile whose surface is flaking or peeling in thin leaves.
A flaking tile can still shed water for a while, but each winter takes more of it. Replacing the odd one is straightforward. A slope where many tiles are flaking points to a covering at the end of its life, not a repair job.
Matching is the other challenge. Clay tiles weather and fade, and a new tile next to a hundred-year-old one stands out. Reclaimed tiles taken from a hidden slope or a salvage yard give a closer match, and their texture often suits better too. Our page on how to match roof tiles for a repair explains the options.
Cracks from impact, such as a branch or a dropped tool, are one-off events. Our page on what causes cracked roof tiles separates those from frost damage.
The lifespan figures
Marley quotes the BRE as setting "a minimum life expectancy of 60 years" for clay roof tiles. The point to hold on to is that the BRE figure is for clay only. It does not apply to concrete tiles, and it is a minimum, not a forecast.
HomeBuilding & Renovating (Sep 2025) lists clay at "60-80 years". Both are typical published figures. A figure like these is not a promise and does not stand in for a warranty. A roof's actual life depends on the quality of the tile, the pitch, the ventilation, the nails and the care it receives.
For a repair, the figures help answer a practical question. If the roof is 50 years old and the clay is sound, repairs make sense, since there may be decades left. If the tiles are flaking across a whole slope, the age matters less than the condition, and a re-tile may be the better buy.
The fixings often fail before the clay does. Old iron nails rust and let tiles slip, while the tiles themselves are still good. A roof whose tiles slip in ones and twos may need re-fixing, not replacing. our page on how long roof tiles last goes deeper into the ranges.
How a clay roof repair goes
We start by identifying the tile and photographing the failed ones, their neighbours and the underside of the slope from inside the roof space. You see the evidence, and what it says is explained.
A repair then follows one of three routes. For isolated damage, the broken tiles are lifted out and replaced with matched ones, each fixed with a clip or nail according to its position. Where the problem is old fixings, a patch of the slope is stripped, the battens checked and the sound tiles re-laid with new fixings. Where a whole slope has failed, a full re-tile is quoted, using the good old tiles on the least visible face if they can be reused.
Access shapes the cost as much as the tile does. A few tiles reached from a ladder cost little compared with the same job needing a tower or scaffold.
The quote is a single total for the repair we recommend, never a bigger job than the roof needs. Clay roofs around Farnborough, Fleet and the nearby villages are part of our regular pitched roofing work, and the pitched roofing hub covers the other coverings.
