
Chimney Repairs across Greater London
Chimney repointing, flaunching, flashing and stack repairs across Greater London to keep water out.
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- Emergency call-outs
- Pitched and flat roofs
- Homes and commercial
- Covering Greater London
Chimney Repairs
Chimney Stack Repairs and Rebuilds across Greater London
Chimneys take more weather than any other part of the roof. Mortar joints wash out, the flaunching around the pots cracks, and lead flashing at the base can split or pull away from the brickwork. Each of these lets rain into the stack, and from there into the loft, the chimney breast or the rooms below. On older London houses, a leaning or loose stack can also become a safety risk to the roof and to anyone underneath it.
Ashlar Roofing carries out the full range of chimney repairs, from repointing and new flaunching to fitting pots and cowls and renewing lead flashing. Where a stack above the roofline is unsafe, it can be taken down and rebuilt. If a chimney is no longer in use, we can fit a ventilated cap so rain stays out while air still moves through the flue, which helps stop damp from building up inside the chimney breast.


What's included
What Our Chimney Repairs Service Covers
The main parts of the job, each listed in your quote.
- Repointing of eroded mortar joints to stop rain soaking into the stack
- New flaunching around the pots to shed water off the top of the chimney
- Replacement pots and cowls to keep out rain, birds and downdraughts
- Lead flashing renewed where the chimney meets the roof
- Rebuilding of unsafe stacks above the roofline
- Ventilated capping of disused chimneys to reduce damp in the breast
Quotes for Chimney Repairs across Greater London
Tell us what is happening with your roof and we will arrange a visit and a quote.
Our work
Recent Work from Ashlar Roofing

Why choose us
Why Choose Ashlar Roofing for Chimney Repairs
Leaks Traced to Source
Damp near a chimney can come from the pots, the brickwork or the flashing, so we find the actual cause before recommending work.
Leadwork Handled Too
Because we also carry out leadwork and roof repairs, the flashing and surrounding tiles are dealt with alongside the stack.
Emergency Call-Outs
If a stack has been damaged in a storm or is letting water in, we prioritise active leaks and storm damage.
Quote Agreed First
The repairs and their cost are set out plainly in a quote agreed with you before work starts.
About Ashlar Roofing
One Roofing Firm for the Whole Roof
Ashlar Roofing works on houses, flats and commercial premises across Greater London. Pitched roofs, flat roofs, chimneys, leadwork and roofline are all handled by the same firm, so you have one contact for the whole job.

Emergency call-outs
Leaks and storm damage prioritised
Pricing
What Affects the Cost of Chimney Repairs
The cost of chimney work depends on:
- Access and the scaffolding needed to reach the stack
- The height and condition of the chimney
- Whether the job is repointing, flaunching or a full rebuild
- How much lead flashing needs replacing
- The number of pots, cowls or caps required

The work
How We Carry Out Chimney Repairs
The main stages of the job, from the first inspection to the final check.
Inspect the Stack
We look at the brickwork, mortar, flaunching, pots and flashing, and trace where water is getting in. Photos sent beforehand help us plan access.
Arrange Safe Access
Scaffolding or a suitable platform is set up so the chimney can be worked on safely from every side.
Carry Out the Repairs
Joints are raked out and repointed, flaunching and pots renewed, and flashing replaced or the stack rebuilt, in line with the agreed scope.
Check the Surrounding Roof
Tiles around the stack are checked for disturbance, and we confirm with you that all the agreed work is complete.
FAQs
Common Questions About Chimney Repairs
Why is my chimney breast damp?
Can a disused chimney be capped?
Do I need permission to rebuild or remove a chimney stack?
How do I know if my chimney needs repointing?
What does flaunching do?
Still Have a Question?
If your question is not answered here, get in touch and we will discuss it with you. You can also send photos on WhatsApp.
Get in touchAreas we cover
Chimney Repairs across Our London Areas
We carry out chimney repairs across Greater London. Choose your area:
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