Horsham · West Sussex
Chimney stack repairs in Horsham
For terraced streets in Horsham, stacks are often shared between neighbours. We plan scaffold access and the work so both sides know what is involved, and we can price the stack as a whole if you want to split the cost.
Guide price from£560per stack inc VAT
- Postcodes
- RH12
- Population
- about 51,000
- Area
- West Sussex
- Pricing region
- South East
What should you know about the ground under Horsham?
We cover Horsham and its postcode districts RH12, part of West Sussex, with a population of roughly 51,000. We also take enquiries from nearby Crawley (7 miles), Horley (11 miles) and Haywards Heath (11 miles).
Shrinkable clay is widespread in West Sussex. Ground movement here is more often linked to soils, drains and trees than to mining. Typical buildings in West Sussex: Wealden cottages, 1930s semis and bungalows on the coast, and new-town estates in Crawley.
How much will chimney stack repairs cost in Horsham?
Guide prices below are for homes in Horsham, on South East rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| 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 |
Which repair method suits a home in Horsham?
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
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
What happens when we carry out chimney stack repairs in Horsham?
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.
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.
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.
Signs you may need chimney stack repairs
- Damp patches on the chimney breast inside, especially after rain
- Chimney pots that are loose, tilted or cracked at the base
- Mortar washed out of joints, leaving bricks standing proud
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 Horsham: questions and answers
What is the price of chimney stack repairs in Horsham?
Guide prices for chimney stack repairs in Horsham 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.
Do you carry out chimney stack repairs in Horsham?
Yes, Horsham is covered, along with postcode districts RH12. We also cover nearby Crawley and Horley.
Does the ground around Horsham cause cracking?
North West Sussex around Crawley and Horsham sits on Weald Clay, the South Downs are chalk, and the coastal plain has brickearth and gravels. The Weald Clay is prone to shrink-swell movement near trees. Only an investigation can say why a particular building has moved.
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.
Do I need scaffolding for chimney repairs?
In almost all cases, yes. Safe work on a stack needs a stable platform at stack height, which usually means scaffold. Ladders and roof ladders do not give a safe place to repoint, lift pots or rebuild brickwork.
More repairs we carry out in Horsham
- Floor joist repairs
- Lintel replacement
- Brick arch repairs
- Concrete repairs
- Resin injection ground stabilisation
Chimney stack repairs near Horsham
If a stack in Horsham has shed bricks or a pot, photograph it from a safe place and send it over so we can advise on next steps.