Recognise slate roof faults
Loose, missing or fractured slates interrupt the overlapping covering. Falling pieces also create a risk below. Record where the problem is visible from a safe viewpoint and mention whether similar faults have appeared elsewhere on the same slope.
Assess slates and their fixings
A sound-looking slate can move if its fixing has deteriorated. Conversely, an individual damaged slate does not establish that all the fixings have failed. The pattern of defects and the condition of the support beneath help distinguish a local repair from a wider issue.
Choose compatible repair materials
Compatible repair slates need suitable dimensions, thickness and overlap as well as an appropriate appearance. Natural variation and weathering affect the match. On an older property, discuss retained materials and details before making changes to a prominent roof slope.
Is the damage isolated or widespread?
Where defects are isolated, local replacement or refixing may be appropriate. Widespread fixing failure or deteriorated supporting materials needs a broader comparison. The replacement slate page explains decisions about a complete specification and possible reuse of sound material.
Prepare a slate repair enquiry
Include the roof's known history, any previous slate repairs and whether the building has heritage constraints. Safe photographs of the affected slope and fallen pieces, without handling unstable materials, can help frame the enquiry.
Your questions, answered.
Can existing sound slates be reused?+
Potentially, if their condition and dimensions are suitable. Reuse requires assessment rather than an assumption that every old slate is sound.
Why do slates slip when they are not broken?+
Fixings can deteriorate even when the slate itself remains intact.
Does an old slate roof always need full replacement?+
No. Condition, fixing performance and supporting materials matter; age alone is not a replacement specification.
