Can You Replace a Single Roof Tile?

How one tile comes out

Roof tiles overlap in rows, each tile hanging from a timber batten by a nib and sometimes held with a nail or clip. To remove one, the roofer lifts the tiles in the row above, using a slate ripper or a pair of wooden wedges, to free the nibs of the damaged tile. The broken tile can then be slid out or hooked off the batten. A replacement slides in along the same route, and the lifted tiles are lowered back over it.

With plain clay or concrete tiles, which are small and overlap by two layers, the method is delicate, since each tile is held by nibs and by the weight of those above. Interlocking tiles, which have side channels, can be harder because the tile locks into its neighbours. A tile that has simply cracked in the middle can sometimes be removed in pieces and the new one fitted from above.

What to check while the tile is out

The tile is rarely the only fault. With the tile out, you can see the batten, the underlay and the nail. A rotted batten, a torn underlay or a corroded nail points to wider ageing, and replacing the tile alone will not hold. If many tiles nearby are slipping, what causes slipped roof tiles explains the underlying reasons.

We also check the tiles next to the gap for hairline cracks. A tile that has frozen, flaked or thinned is likely to fail soon, and it is cheaper to deal with it while the access is set up.

Finding a matching tile

New tiles seldom match old ones exactly. Concrete tiles weather and lose colour, clay tiles differ batch by batch, and the manufacturer may have changed the profile. For older roofs, reclaimed tiles from a salvage yard often match better than new. A single new tile among old can look bright for a year or two and then blends as it weathers. Our page on matching new tiles to an old roof gives the detail.

Where the roof is steep or the edge is visible from the road, we can swap the odd tile with one taken from a less visible slope, such as a back roof, and fit the new one there instead. That is a trade fix, and it works well on a roof that has plenty of matching tiles in reserve.

When one tile means more than one tile

A single cracked tile is often just that: a stone thrown from a mower, a branch in a storm, or a tile that took a knock from a ladder. But if the damaged tile sits beside a run of others that look tired, or the break follows a line across a slope, the problem is wider. Frost damage tends to appear in groups, and nail sickness, where the fixings corrode, lets whole rows slip together. Our guide to nail sickness explains the signs.

If we find that, we say so, and we show you the photographs. A repair of a few tiles at a time can be a sensible way to keep an older roof going for years, and we will not push a replacement when patching works. When it does not, we explain why.

Fixings that hold the new tile

A new tile is held by its nibs on the batten and, depending on position and exposure, by a nail or a clip. Tiles near the eaves, ridge and verge usually need a mechanical fixing, and on exposed roofs every tile may be fixed. A replacement tile left to sit on its nibs alone can lift in a gale, so the correct fixing needs fitting. The BS 5534 roof tile fixing guide sets out the standard behind those decisions.

Access and safety

Replacing one tile still means working at height. A broken tile close to the eaves can sometimes be reached from a ladder, but a tile higher up, or on a steep slope, needs scaffold or a roof ladder, and you should never stand on tiles yourself. They crack under a foot and can slide. Our answer on whether you can walk on roof tiles explains why.

If you have noticed a single slipped or broken tile, a prompt repair is worth it. Water finds an open gap quickly, and the underlay below is only a second line of defence. Take a photo from the ground and send it across, and we will check the rest of the slope during the survey. Our wider tiled-roof work is covered under tiled roofs we repair and replace.