Greenwich · Greater London
Chimney stack repairs in Greenwich
Damp on a chimney breast in a Greenwich home often starts at the top of the stack, where cracked flaunching or failed pointing lets rain in. Fixing the stack and capping unused flues usually stops it at the source.
Guide price from£625per stack inc VAT
- Postcodes
- SE3, SE7, SE9, SE10, SE18
- Population
- about 290,000
- Area
- Greater London
- Pricing region
- London
How do local ground conditions affect chimney stack repairs in Greenwich?
We cover the whole of Greenwich, including postcode districts SE3, SE7, SE9, SE10, SE18; about 290,000 people live in the borough. We also take enquiries from nearby Lewisham (4 miles), Newham (4 miles) and Bexley (4 miles).
Shrinkable clay is widespread in Greater London. Ground movement here is more often linked to soils, drains and trees than to mining. What you mostly find across Greater London: Victorian and Edwardian terraces with shallow footings, inter-war semis in the outer boroughs, and converted flats and mansion blocks.
From first photo to finished repair
Check what is below
We ask whether any chimney breasts have been removed, and check the loft and rooms below for cracking. If a breast has gone without proper support, we recommend an independent chartered structural engineer before any stack work.
Scaffold to the stack
Safe access is set up with a working platform around the stack. On terraces we may need to agree access over a neighbour’s roof, and a council licence is arranged where the scaffold stands on the pavement.
Repair, restrain or rebuild
The agreed work is carried out: repointing, new flaunching and pots, restraint, or taking the stack down and rebuilding it. Lead flashings where the stack meets the roof are checked and renewed if needed.
Symptoms that point to chimney stack repairs
- Mortar washed out of joints, leaving bricks standing proud
- Cracked or missing flaunching around the top of the stack
- A stack visibly leaning when you look along the roof ridge
Guide prices for chimney stack repairs in Greenwich
The ranges below reflect typical London costs for chimney stack repairs, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Repointing, flaunching and minor brick repairs | £625 – £2,500 | per stack |
| Partial or full stack rebuild | £3,750 – £12,500 | per stack |
| Stack restraint or strappingest. | £500 – £1,500 | per stack |
Methods for chimney stack repairs
Partial or full rebuild
Where the lean is pronounced or the brickwork is badly decayed, the stack is taken down to sound masonry, often to roof level, and rebuilt plumb with new flashings and flaunching. Original bricks are cleaned and reused where possible to keep the appearance.
Best for: Badly leaning or decayed stacks
Stack restraint or strapping
A stack that has leaned slightly but is otherwise sound can be restrained with stainless straps or ties fixed back to the roof structure or the gable. This stops further movement without taking the stack down, and is often combined with repointing.
Best for: Slightly leaning stacks with sound brickwork
Rules for chimney stack repairs in England
In England, underpinning and other work that alters or strengthens a wall or foundation is building work under the Building Regulations (Part A, structure), so building control approves and inspects it. Like-for-like repairs often are not, and we tell you which applies before a price is agreed. Work to a party wall, or excavation close to a neighbour’s foundations, can also need a notice under the Party Wall etc. Act 1996.
Frequently asked questions
How much will chimney stack repairs cost in Greenwich?
Guide prices for chimney stack repairs in Greenwich start from about £625 per stack, including VAT, on London rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Greenwich?
We do. Greenwich and the surrounding area are covered, including nearby Lewisham and Newham. A free initial assessment from your photos is the first step.
Is the ground in Greater London prone to subsidence?
Most of Greater London sits on London Clay, among the most shrinkage-prone ground in the UK, with river gravels along the Thames. Subsidence claims here are among the most frequent in the country, especially after dry summers and near street and garden trees. Only an investigation can say why a particular building has moved.
Should I remove my chimney stack instead of repairing it?
It depends on whether you use the flue, the stack’s condition and how it relates to the house next door. Taking a stack down below the roofline changes the structure and the roof, and on a terrace it can affect your neighbour. We can price both options.
Why is my chimney stack leaning?
Most leaning stacks are caused by sulphate attack, where chemicals from old flue gases make the mortar expand more on the wetter side, so the stack bends away from the weather. Frost damage and failed pointing can make it worse. A recently leaning stack can also signal problems below.
Other structural repairs in Greenwich
- Structural crack repairs
- Bay window subsidence repairs
- Extension pulling away repairs
- Crack stitching
- Underpinning
Chimney stack repairs near Greenwich
The quote tool gives guide prices for stack repointing, restraint and rebuilds in Greenwich; send photos to narrow down which you need.