Chimneys are one of the most common sources of roof leaks in Weston-super-Mare, Worle, Kewstoke, and across the North Somerset coast. Exposed to salt air and wind-driven rain, chimney stacks are vulnerable at lead flashings, mortar joints, soakers, and flaunching (the mortar around chimney pots).
This guide explains:
- Why chimneys leak near the coast
- What our chimney repair and repointing service includes
- When flashing needs replacing
- Common repair costs
- How to prevent recurring stack damp
Why Chimney Stacks Leak in North Somerset
In coastal towns like Weston-super-Mare, strong winds force rain up and under tiles, into tiny gaps around flashings and brick joints. Over time:
- Mortar joints powder or crack, letting water track inside
- Lead flashings lift or split from fatigue
- Flaunching fails, allowing pooling water to penetrate
- Soakers and underlay at the roof-to-stack junction break down
☔ If you notice ceiling stains that worsen in westerly winds, your chimney is likely the source.
Our Chimney Repair & Repointing Process
Here’s how we fix chimney leaks properly and for the long term:
- Survey & Photos
We inspect the roof, loft, and ceiling stains to track moisture paths. - Lead Flashings & Soakers
- Remove defective flashings
- Replace with correct code-marked lead
- Cut chase into brickwork, install wedges, and seal
- Repointing
- Rake out failed mortar joints
- Repoint using breathable mortar matched to your chimney’s brick type
- Flaunching & Cowls
- Renew or repair the flaunching bed
- Fit cowls suitable for live or unused flues
- Tile & Underlay Checks
- Inspect the back gutter, soakers, underlay, and tile lap at the base of the chimney
- Fix any nearby defects while we’re on-site
If we find further issues, we may recommend related services like:
Lead Flashing Repair vs Replacement
We don’t replace lead unless it’s needed.
If your flashings are:
- Split, cracked, or worn
- Short-lapped, poorly fixed, or made from the wrong code lead
We’ll remove and install new lead, cut to profile, and fitted with the correct laps and fixings.
💡 In high-theft areas, we can also install non-lead alternatives.
Typical Costs & Timeframes (Guide Only)
| Service | Duration |
|---|---|
| Minor repoint & flashing re-dress | ½ – 1 day |
| Full flashing + repoint + flaunch | 1 – 2 days |
| Scaffold | Specified for safety (especially on 2+ storey properties) |
Built for the Coast: Chimney Detailing That Lasts
We specialise in chimney repairs that stand up to salt air and coastal winds:
- Generous flashing laps
- Correct lead chase sealing
- Mechanical fixings where necessary
- Assessment of adjacent details like verges, valleys, and soakers to prevent re-entry leaks
FAQs – Chimney Repairs & Repointing
Q: Do I always need new flashings?
A: Not always. If lead is intact, we can re-dress and re-seal. Splits or improper laps warrant replacement.
Q: Will repointing alone fix my leak?
A: Only if flashing and soakers are sound. We inspect the whole chimney interface to prevent missed leaks.
Q: Can you work in light rain?
A: We can make the stack safe, but proper pointing and leadwork require dry conditions to cure effectively.
Q: Do you work in Clevedon and Portishead?
A: Yes — we cover Clevedon, Portishead, Worle, Yatton, Banwell, Winscombe, Congresbury, Cheddar, and all of North Somerset.
Q: What’s the next step?
A: Book a survey for photos and a fixed quote. Then explore our:
Related Services
🔧 Roof Maintenance
🧱 Roof Tile Replacement
🏠 Flat Roofing
Local Roofing Expertise You Can Trust
Whether you’re replacing an old roof or designing a new one, RMoss Roofing WSM offers free consultations and detailed advice tailored to your specific home and location.
We provide:
- 🏠 Flat Roof Installation & Repairs
- 🏠 Pitched Roof Maintenance & Replacement
- 🛠️ Storm Damage Roof Repairs
- 🧰 Emergency Call-outs
- 🧱 Chimney Repairs, Lead Flashing & Gutters
Areas We Serve
We provide roofing services across:
- Weston-super-Mare
- Worle
- Portishead
- Cheddar
- Clevedon
- Congresbury
- Burnham-on-Sea
- All surrounding North Somerset villages
Book a Free Consultation with RMoss Roofing WSM
Need expert advice for your home roofing project in North Somerset? Whether you’re leaning towards a modern flat roof or a traditional pitched roof, we’re here to guide you with honest recommendations and professional service.