Chapter 1: Tiles have blown off my roof in the wind. What happens next?
What we find
A tile loses its grip in two ways. Either the nail or clip holding it has rusted through or pulled out of the batten, or the tile itself has cracked along a frost line and the wind has finished the job. Concrete interlocking tiles from the 1960s to 1990s, which cover a great deal of Basingstoke's estates, are held mainly by their own weight and a few clips along the edge, so a strong gust from the south-west can lift a run of them at once. Older clay plain tiles hang on small nibs and a nail every few courses, and they fail one at a time.
Once a gap opens, rain reaches the underlay, the sheet of felt or membrane under the tiles. Underlay is a second line of defence, not a roof. Where it has aged and split, or been nicked by the falling tile, water passes straight through to the battens, the timber strips the tiles hang from, and on to the rafters and ceiling. A few missing tiles after a storm can let a surprising amount of water into the house over one wet night.
What we fix
The first job is to stop the water. If tiles are down and the weather is still bad, we fit a temporary cover or lay spare tiles loose and secure them, so the opening is closed while the rain lasts. Our guide to temporary roof repairs and tarpaulins explains what is sensible and what only looks sensible.
The permanent repair comes once the roof is dry and we can see properly. We lift the tiles around the gap, check the underlay for tears and the battens for splits or rot, and replace anything damaged. Tiles are matched by profile, size and colour to the originals where we can, which matters on a visible slope and on streets where the roofs look alike. Each replacement is fixed with the right nail or clip for the position, and the courses at the edges and eaves are fixed more heavily because that is where wind pulls hardest.
Where a whole slope has lost its fixings, the answer may be a re-fix of the entire face. We show you the photographs of the rusted clips and the pulled nails, so the decision rests on what is up there.
Before
After
