Question answered
Chimney damaged in a storm: what to do
The short answer
If a chimney has fallen or been damaged in a storm, keep everyone away from the ground and rooms beneath it, because loose brick and pots can drop without warning. Photograph the damage from a safe distance, tell your insurer, and have a roofer make the opening safe. The stack is then repaired or rebuilt once the cause is understood.
When a chimney stack comes down in a gale, the first job is keeping people away from whatever may still fall. The rebuild is a later decision, made once the roof below is secure.
Keep clear of the fall zone first
A stack that has shed part of itself often still has loose masonry sitting on its remaining courses. Wind, or even the thud of a slammed door, can bring more down. Treat the strip of ground below the chimney, and the room underneath it, as out of bounds until someone has looked.
Debris may also have gone through the roof. Check the ceiling beneath the stack from a safe distance for bulging or staining, and never stand under a ceiling that is sagging. If the flue served a fire or boiler, stop using that appliance until the flue has been checked, since fallen brick can block it.
Do not climb to retrieve pots or bricks. Photograph them where they lie, standing well back, and note which way the pieces fell. That direction says something about how the wind took the stack, and it helps whoever assesses the damage later.
Making the roof safe before anything permanent
A fallen stack usually leaves a hole or broken tiles around its base, and rain follows. The make-safe job is to remove anything unstable, close the opening and stop water entering, using a temporary cover fixed properly to the roof structure. Our page on how long a roof tarp can stay on explains the limits of that approach.
Scaffolding is often needed for the proper work. MyBuilder's guide puts scaffolding for a chimney at £400 to £900 as a typical UK range (updated 21 August 2026). Part of that may be avoided where the work can be reached from a lower tower, which the survey establishes.
If water has come in, start drying the room straight away. Drying out after a roof leak covers the sequence, and emergency roof repairs shows the wider picture of what to do first.
Telling the insurer and recording the damage
With storm claims, the Financial Ombudsman Service asks whether a storm really happened that day, whether the damage is what such weather usually causes, and whether it was the main reason. Its own description of a storm is strong wind, commonly bringing rain, hail or snow with it. Which? adds that insurers often tie their definitions to a specific wind gust.
A sound stack that falls in a gale fits the pattern. One that was already cracked, with open joints and crumbling mortar, invites the argument that age brought it down. So photograph the fallen material and the stump, and the state of the mortar in the broken courses.
Speak to the insurer before arranging permanent work, and keep invoices for the make-safe. If the claim is refused, our page on roof claims that are rejected sets out the complaint route.
Where debris hit next door, a neighbour's roof tiles damaging your property works through the same questions from the other side.
Repair, rebuild or take it down
What remains of the stack decides the job. If only the pot and top courses are gone, the stack can be rebuilt to its old height. If it has cracked through or leans, it usually has to come down to a sound level and be built up again. MyBuilder's guide shows a typical UK range of £2,000 to £10,000 or more for a stack rebuild, and £500 to £2,000 for repointing. What the survey finds on your own stack settles the price.
Removing a stack entirely is a separate decision. The Planning Portal says Building Regulations approval will always apply when chimney breasts are removed, because they form part of the structure, and that rules may differ for the stack on its own. If the chimney is on a party wall, GOV.UK's party walls guidance calls for notice to the neighbour. Check with building control before committing to either.
Rebuilding so it survives the next gale
A stack stands exposed on every face, and a coastal gale tests each joint. We study the brickwork, the pointing, the flaunching (the mortar that holds the pot and sheds water) and the lead around the base. If the original failed through weak bedding or open joints, rebuilding it identically only repeats the fault.
The lead flashings, plus the back gutter that sits behind the stack, carry water around it. They are renewed or properly redressed during a rebuild, since they are difficult to reach afterwards. Our survey photographs show what was found at each point, and the figure for the work reaches you in writing as a single total.
Fixing matters as much as brick. Pots are bedded with a full flaunching, and any cowl or cap is secured so that it cannot become the next thing to fall.
Fallen chimney: two more questions
Can a damaged chimney stack be repaired before the insurer visits?
Make it safe, but hold the permanent rebuild until the insurer has agreed what it needs. Photograph the fallen brick and stump first and keep receipts. Ask whether it wants an inspection, and get the answer in writing so nobody can say later that evidence was removed.
Is a leaning chimney after a storm an emergency?
It can be. A stack that has moved or opened at the joints may drop further sections, so keep everyone clear of the ground below and arrange an inspection soon. A roofer can often judge, from the pavement or a ladder at the eaves, whether it needs bringing down.
Tell us about your roof
Describe what is happening and we will call you back to arrange a visit.
- Photographs of what we find
- A written quote with one total price
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