Chimney Repairs
Chimney Repair Services
Chimneys take a beating. They stand at the most exposed part of the house, are hit by frost, wind and rain on every face, and sit exactly where the roof covering is at its most complicated. When something fails, water often travels into the house and shows up on a ceiling or chimney breast far from the cause.
Putney & Wimbledon Roofers repairs and rebuilds chimney stacks, renews lead flashings and keeps chimneys weathertight for homeowners across Putney, Wimbledon and South West London. We assess the stack and the surrounding roof together, because one rarely fails without the other.

Chimney Repairs & Roofing Solutions
Signs of chimney trouble include crumbling or missing mortar, lifting or cracked lead flashings, damp patches on the chimney breast or ceilings nearby, loose or cracked pots, leaning stacks and flaking bricks.
We carry out chimney flashing repairs, repointing, flaunching and pot repairs, rebuilds, capping and water ingress solutions, and we repair the roof around the stack at the same time, so you do not need two trades.
- Chimney Repairs
- Chimney Flashing Repairs
- Water Ingress Solutions
- Chimney-Related Roof Repairs
- Mortar & Junction Repairs
- Weather Deterioration Solutions



Need Chimney Repairs?
020 3633 9588
Chimney repairs at a glance
- Services: lead flashings, repointing, flaunching, pot replacement, rebuilds, capping and cowls
- Typical cause of leaks: failed flashings, cracked mortar and damaged crowns
- Scaffolding: normally needed for safe working at height and itemised in your quote
- Roof and chimney in one visit: we repair the stack and the surrounding roof
- Free inspection and quote: itemised and in writing
- Urgent problems: available 24 hours
Comprehensive chimney repair solutions
Lead flashing and leadwork
Flashing is the weatherproof seal between the chimney and the roof. When it fails, or has been “repaired” with sealant or cement fillets, water gets in. We install lead step flashings, back gutters and aprons in the correct code of lead; on one recent project we fitted new code 4 lead step flashings to both chimneys. If your chimney is leaking but the stack looks sound, the flashing is usually the culprit.
Chimney repointing
Weathered mortar joints let water into the stack. We rake out and repoint using a mortar that suits the brick, which on period properties normally means lime mortar, so the stack can breathe rather than trapping moisture.
Flaunching and chimney pots
The flaunching is the sloping mortar crown that holds the pots and throws rainwater clear. When it cracks, water gets into the stack. We renew flaunching and rebed or replace cracked and loose pots, rather than simply cementing them in place.
Chimney rebuilds
A leaning, cracked or spalling stack may be unsafe. We take it down and rebuild the affected courses, in matching bricks where possible.
Capping and cowls
Disused chimneys should be capped with a ventilated cowl, which keeps out rain, birds and debris while allowing air to circulate and prevent damp.
Roof repairs around the stack
Slipped tiles, cracked lead and rotten battens around the chimney are repaired in the same visit. See roof repairs.
What affects the cost of chimney repairs?
| Factor | Why it matters |
|---|---|
| Type of repair | Flashing or repointing is a smaller job than a rebuild. |
| Height and number of stacks | Tall or multiple stacks need more access and labour. |
| Scaffolding | Nearly all chimney work needs safe access, itemised in your quote. |
| Materials | Lime mortar, matching brick and the code of lead used. |
| Condition of the surrounding roof | Tile, batten or lead repairs at the same time. |
Guide prices
| Job | What it covers | Guide price |
|---|---|---|
| Chimney repointing | Raking out and repointing failed mortar joints | From £595 per stack |
| Lead flashing renewal | New code 4 lead step flashings and soakers | From £650 per stack |
| Flaunching and pots | New flaunching and re-bedding chimney pots | From £450 per stack |
| Chimney rebuild | Taking down and rebuilding a damaged stack | From £2,450 per stack |
Prices are a guide for a typical South West London house and include labour and materials. Scaffolding and access are priced separately. Every roof is different, so after a free survey you receive a fixed, itemised written quote. Request a free quote.
Three steps. No surprises.
- Free survey and inspection. We inspect the pots, crown, stack, flashings and roof junction, from the loft and from above, with photographs.
- Itemised written quote. A fixed, itemised price including access, with named materials.
- The job, done properly. Our own tradesmen carry out the work, clear the site daily and send you before-and-after photographs.
Is your chimney in need of repair?
- Crumbling mortar. Loose, recessed or missing joints between the bricks.
- A leaning stack. Any visible tilt is a safety risk and needs prompt attention.
- Damp or water stains on the chimney breast or ceilings near it.
- Damaged or lifting flashing where the stack meets the roof.
- Loose or cracked pots. They can fall in high winds.
- Spalling bricks. Flaking faces show that water is getting into the masonry.
- Bits of brick or mortar in the gutters or garden.
A leaning or unstable stack is an emergency. If you are worried, call us any time and keep people away from the area below.
The true cost of cheap work
- Wrong mortar. Hard cement on old brick traps moisture and causes the brick to fail.
- Sealant instead of lead. A short-term cosmetic fix that fails within a season or two.
- Cementing loose pots without fixing the cause.
- Ignoring structural problems such as lean and rot behind a patched surface.
- Poor capping that traps moisture and causes damp and mould.
Chimneys, roofs and new roofs
If we are re-roofing, the chimney lead is always replaced as part of the job. See new roof installation, slate roofing and tile roofing. Our drone surveys can photograph tall chimneys and flashings without scaffolding, so you know what needs doing before you commit.
We repair chimneys across Putney, Wimbledon, Wandsworth, Richmond, Kingston upon Thames, Twickenham, Balham, Tooting and surrounding areas. See areas we cover or request a free inspection.
Frequently Asked Questions: Chimney Repairs
Clear, practical answers from our 3rd-generation roofing team in South West London.
What causes water to leak around a chimney stack? +
Chimney leaks typically stem from cracked or absent lead step flashings, failing cement flaunching on the chimney crown, or eroded brickwork mortar joints allowing driving rain to saturate the masonry.
What grade of lead do you use for chimney flashing? +
We use milled lead in the correct code for each position, typically code 4 for step flashings, custom dressed into stepped flashings, front aprons, and back gutters with a protective patination oil finish to prevent white staining.
Can an unused chimney stack be safely capped or removed? +
Yes. We can repoint, fit ventilated clay cowls to stop rain and bird ingress while maintaining flue ventilation, or safely dismantle unstable stacks down below the roofline.
How do you inspect high or inaccessible chimney stacks? +
We utilize our 4K high-definition drone survey capability to inspect chimney stacks, pots, and flaunching safely without initial scaffolding costs.
How long does chimney repointing take? +
It depends on the size of the stack and its condition. Most repointing and flashing jobs are completed in a day or two once access is in place; we confirm timings in your quote.
Why is my chimney breast damp? +
The usual causes are failed flashings, a cracked flaunching or crown, a missing cap on a redundant chimney, or porous brickwork. A roof and stack inspection pinpoints which.
Can you repair a leaning chimney? +
A leaning or cracked chimney usually has to be taken down and rebuilt for safety. We assess the stack and tell you whether repointing is enough or a rebuild is needed.
Do I need scaffolding for chimney work? +
Almost always, for safe working at height. If scaffolding is needed it is shown as a separate line in your written quote.
Should I cap a chimney I do not use? +
Yes. Capping with a ventilated cowl stops rain getting in while still allowing air movement, which prevents damp.
REQUEST A QUOTE
Book Your Chimney Stack Inspection & Repair Today
Fill out the form with your chimney details, and our skilled leadwork and masonry team will assess the condition and arrange swift repairs.
For urgent leak diagnostics or storm damage, reach us directly by phone:
