Possible causes
- Lifted, split or missing lead flashing
- Crumbling mortar joints on the stack
- Cracked chimney crown or flaunching
- Uncapped pots letting rain in
Warning signs
- Damp patches on the chimney breast
- Staining on the ceiling next to the stack
- Loose bricks or mortar on the roof
Typical solutions
- New or re-dressed lead flashing
- Repointing the stack
- Re-flaunching around the pots
- Fitting caps or cowls
When to get it inspected
When damp appears on or near the chimney breast. Several faults can look the same from inside, so the stack needs checking up close.
This page is general guidance, not a diagnosis. Call 01322 902061 to book an inspection, or read about our chimney repairs & leadwork service.