Marlow · Buckinghamshire
Chimney stack repairs in Marlow
Before repairing a stack at a Marlow property, we ask what lies beneath it. If a chimney breast has been removed inside, the support for the stack above needs checking by an engineer before any work on the roof.
Guide price from£560per stack inc VAT
- Postcodes
- SL7
- Population
- about 18,000
- Area
- Buckinghamshire
- Pricing region
- South East
Is Buckinghamshire prone to ground movement?
Marlow, Buckinghamshire: about 18,000 residents across postcode districts SL7. If you are just outside Marlow, we also cover Maidenhead (4 miles), High Wycombe (4 miles) and Slough (9 miles).
Shrinkable clay is widespread in Buckinghamshire. Ground movement here is more often linked to soils, drains and trees than to mining. Typical buildings in Buckinghamshire: Market-town terraces, 1930s semis in the south, and large late-20th-century estates in Milton Keynes and Aylesbury.
Chimney stack repairs prices in Marlow
Prices in Marlow are worked out on South East 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 | £560 – £2,250 | per stack |
| Partial or full stack rebuild | £3,350 – £11,200 | per stack |
| Stack restraint or strappingest. | £450 – £1,350 | per stack |
How we usually approach chimney stack repairs
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
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
What happens during chimney stack repairs, step by step?
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.
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.
What to look for before calling about chimney stack repairs
- Chimney pots that are loose, tilted or cracked at the base
- Damp patches on the chimney breast inside, especially after rain
- Bits of brick, mortar or render landing in the garden or gutter
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.
Questions about chimney stack repairs in Marlow
How much should I budget for chimney stack repairs in Marlow?
Guide prices for chimney stack repairs in Marlow start from about £560 per stack, including VAT, on South East rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Can you survey a property in Marlow?
Yes, Marlow is covered, along with postcode districts SL7. We also cover nearby Maidenhead and High Wycombe.
Why do houses in Buckinghamshire crack?
The Chilterns are chalk with clay-with-flints on the tops, while the Vale of Aylesbury and Milton Keynes sit on Gault, Kimmeridge and Oxford Clays and glacial till. The vale clays are prone to seasonal shrinkage near 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.
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.
Related work in Marlow
- Structural surveys and crack monitoring
- Resin injection ground stabilisation
- Structural crack repairs
- Bay window subsidence repairs
- Crack stitching
Chimney stack repairs near Marlow
Send zoomed photos of the chimney stack at your Marlow home, from the street and the garden, for a free initial assessment.