Lewisham · Greater London
Chimney stack repairs in Lewisham
Plenty can be judged about a Lewisham chimney from the pavement. A lean, tilted pots or patchy pointing are often visible from the ground, and photos with a zoom tell us a lot before anyone goes up.
Guide price from£625per stack inc VAT
- Postcodes
- BR3, SE4, SE6, SE12, SE13
- Population
- about 300,000
- Area
- Greater London
- Pricing region
- London
How do local ground conditions affect chimney stack repairs in Lewisham?
We cover the whole of Lewisham, including postcode districts BR3, SE4, SE6, SE12, SE13; about 300,000 people live in the borough. If you are just outside Lewisham, we also cover Southwark (3 miles), Greenwich (4 miles) and Lambeth (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.
Which repair method suits a home in Lewisham?
Repointing and brick repairs
Eroded joints are raked out and repointed in a mortar suited to the brick, often a lime-based mix on older stacks. Spalled or cracked bricks are cut out and replaced with matched reclaimed or new bricks. On many stacks this, with new flaunching, is all that is needed.
Best for: Upright stacks with weathered joints and some damaged bricks
Flaunching and pot resetting
Old cracked flaunching is broken out, pots are lifted and reset or replaced, and new flaunching is formed to a fall so water runs off. Unused flues can be capped with ventilated caps, which keeps rain out while letting the flue breathe.
Best for: Loose pots and cracked mortar at the top of the stack
What happens when we carry out chimney stack repairs in Lewisham?
Look from the ground
Photos from the street and garden, ideally with a zoom, show us the lean, the pots, the flaunching and the state of the pointing. Damp patches inside are worth photographing too, as they help trace the route water is taking.
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.
Weatherproof and clear
Caps or cowls are fitted where agreed, the roof around the stack is checked for slipped tiles, and debris is cleared from gutters. You receive photos of the finished stack taken from the scaffold, since it is hard to see from the ground.
Signs you may need chimney stack repairs
- Bits of brick, mortar or render landing in the garden or gutter
- A stack visibly leaning when you look along the roof ridge
- Mortar washed out of joints, leaving bricks standing proud
How much will chimney stack repairs cost in Lewisham?
Prices in Lewisham are worked out on London rates. They include VAT and are a starting point: access, the extent of the damage and whether an engineer or building control is involved all move the figure.
| 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 |
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.
Chimney stack repairs in Lewisham: questions and answers
How much will chimney stack repairs cost in Lewisham?
Guide prices for chimney stack repairs in Lewisham 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 Lewisham?
We do. Lewisham and the surrounding area are covered, including nearby Southwark and Greenwich. 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.
What is chimney flaunching?
Flaunching is the sloped bed of mortar on top of a chimney stack that holds the pots in place and throws rainwater off. When it cracks, water gets into the stack and pots can work loose. Renewing it is one of the most common stack repairs.
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.
Other structural repairs in Lewisham
- Crack stitching
- Wall tie replacement
- Extension pulling away repairs
- Bay window subsidence repairs
- Floor joist repairs
Chimney stack repairs near Lewisham
Each part of a Lewisham chimney job, scaffold included, is itemised in our no-obligation written quote so you can see where the cost lies.