Finding a slate on the pavement or in the garden after a windy night is one of the clearest signs that a roof has taken damage. It's a common sight across Greenbank following spells of high wind, particularly on older slate roofs where fixings have gradually corroded or loosened over the decades since the slate was first laid. A single slate on the ground is rarely an isolated event; it's usually a symptom of wider fixing wear across that section of roof that's been developing quietly for some time before the wind finally finished the job.
A single missing slate might look minor from the ground, but it leaves the underlying roofing felt or membrane directly exposed to wind and rain, and that membrane was never designed to be a long-term weather barrier on its own. Left in place for even a short period, especially through further wet weather, a gap like this can let water track into the roof timbers, and once timber starts absorbing moisture repeatedly it becomes far more prone to rot over time, which is a considerably more involved and costly repair than the original slate would ever have been.
It's also worth checking nearby slates rather than assuming only the missing one is affected. Wind strong enough to lift one slate has often loosened the fixings on several others close by, which may look intact from a distance but could come away in the next storm. A proper inspection covers the surrounding area, not just the obvious gap, and often uncovers two or three additional slates that are only loosely hanging on and likely to fail during the next spell of high wind that passes through the area.
Slipped rather than fully missing slates are just as worth flagging, as a slate hanging at an angle or sitting slightly out of line is usually a sign its fixing has already failed and it's only a matter of time before it comes loose completely, or before it lets water past the join between slates. From ground level these can be surprisingly hard to spot, particularly on a steep or high roof where the angle makes a slight displacement difficult to judge accurately without a closer look.
Matching replacement slates to the existing roof, particularly on older Greenbank properties where the original slate may be a specific size, thickness or type, is something an experienced roofer will factor into the repair so the finished result sits properly with the rest of the roof rather than standing out. Reclaimed natural slate is often the best match for a period property where the original quarry source is no longer in production, and it can be sourced with a bit of local knowledge of the reclamation market.
If wind has left slate missing or displaced on your roof, it's worth having it looked at sooner rather than later. Brunel Roofing Bristol can check the whole roof for related damage, replace missing slates to match, and offer a free quote for the work involved, whatever the scale of the job turns out to be.
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