Leak Investigation & Repairs
Found the Damp Patch, Not the Leak? We Trace It Properly.
Water rarely enters where it shows up on your ceiling. We track leaks back to their actual source before touching a single tile.
- Fully insured tradespeople
- 10-year workmanship guarantee
- Rapid emergency response
- Locally based in Welwyn
Signs you need this service
- A ceiling stain that keeps reappearing after previous "repairs"
- Damp patches that only show up during heavy or driving rain
- Water tracking down a wall from the loft or roofline
- Mould or peeling paint near a chimney breast or window head
- A leak that seems to move location depending on wind direction
Our process
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1
Trace the path
We inspect the roof, flashing, valleys and loft space to trace water back to its true entry point — leaks often travel a long way from where they appear.
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2
Explain the cause
You get a clear explanation of what caused the leak, not just what we plan to fix.
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3
Repair at the source
We repair the actual entry point, using leadwork, flashing or tile repairs as required.
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4
Confirm it has stopped
We check back with you after the next rainfall to confirm the leak is genuinely resolved.
Why choose CS Roofing
- Specialists in tracing hard-to-find and recurring leaks
- Fully insured local team based in Welwyn
- 10-year workmanship guarantee on all leak repairs
- We explain the cause, not just the fix
Frequently asked questions
I've had a leak 'fixed' twice already and it keeps coming back — can you help?
This is exactly what we specialise in. Recurring leaks almost always mean the original repair treated a symptom rather than the source. We trace the actual path before repairing anything.
Can you find a leak that only happens in certain weather?
Yes. Leaks that only appear in driving rain or high wind are often related to flashing or valley issues rather than the tiles themselves — we look at the whole system, not just the obvious spot.
Do I need to be present during the investigation?
It helps if you can show us exactly where the staining appears inside, but the roof and loft inspection itself doesn't require you to be present the whole time.
What if the leak is coming from a chimney or valley?
We carry out leadwork and flashing repairs ourselves — see our leadwork & flashing repairs service — so we can fix chimney and valley leaks in the same visit in most cases.