Chimney Repairs & Repointing
A chimney stack built to stand, not shed.
Chimney repointing, stack rebuilds, flaunching, lead flashing and pot re-bedding — masonry repairs done by hands that started in stone, and backed by a 5-year workmanship warranty across Co Durham, Teesside & Tyne and Wear.
Years masonry
Chimneys repaired
Workmanship warranty
Average review score
5-yr
Workmanship warranty on every chimney repair
Masons first, roofers second
A chimney is masonry — and masonry is where we began.
Our name comes from the stone our founder set on his first chimney job. Twenty-five years on, that same standard holds: rake out the failed mortar to a sound depth, repoint with a matched mix, replace spalled bricks with matching stock, and dress new lead that’s chased into the brickwork — not just sealed with mastic that fails in a season. Done properly, a chimney stack stands for decades, not just the first winter.
- Free chimney survey with honest advice — repoint or rebuild, no pressure
- Fixed-price quote — repointing, bricks, flaunching, leadwork and pots included
- Mortar and bricks matched to the original character of the property
- 5-year workmanship warranty on every chimney repair, in writing
What we do
Every chimney fault, fixed at the cause.
From a single repointed stack to a full rebuild with new lead and pots, one crew owns the whole chimney — so no detail falls between trades.
Chimney Repointing
Frost and age crumble the mortar between chimney bricks until the stack loosens and damp tracks in. We rake out the failed mortar and repoint with a matched, weather-resistant mix — recessed, struck and tooled to match the original joint profile and the character of the property.
Stack Rebuilds & Brick Repair
Where spalled bricks, leaning stacks or failed flaunching have gone too far for repointing, we take the stack down to sound brickwork and rebuild it true — matching bricks, bond and mortar so the repair reads as part of the original build, not a patch on it.
Flaunching & Mortar Caps
The mortar cap around the pot bases is what keeps rain out of the stack top. We renew cracked and eroded flaunching with a strong, weatherproof mortar, dressed to shed water and finished neat — the detail that stops most chimney leaks before they start.
Lead Flashing & Soakers
Where the chimney meets the roof, the lead does the work. We dress new code-4 and code-5 step flashing, aprons and soakers, and renew counter-flashing into the stack — the abutment detail that decides whether a chimney stays dry for decades or fails in a winter.
Pots, Cowls & Caps
Loose, cracked or missing pots are a danger in high winds. We re-bed and re-fix chimney pots, fit stainless steel cowls to stop rain and downdraught, and cap off disused flues cleanly — keeping the stack weathertight and the home safe.
Waterproofing & Damp Proofing
Porous brickwork sucks up rain and shows as damp stains on chimney breasts inside. We apply breathable masonry water repellent and renew failed damp-proof courses where needed — protecting the brick without trapping moisture that would only rot it from within.
When to call us
Six signs your chimney needs attention now.
- Mortar dropping or crumbling from the chimney stack onto the roof below
- Damp patches or brown staining on the chimney breast inside the house
- Loose, cracked or leaning chimney pots visible from the ground
- Spalled, blown or crumbling bricks on the stack face
- Gaps or cracks in the lead flashing where the chimney meets the roof
- Pieces of flaunching missing around the pot bases at the stack top
Failed mortar — the warning sign
Caught early, a repoint saves a rebuild
How we build it
Every stage, done properly.
From the survey to the last pot clip, one crew owns the whole chimney stack — so no detail falls between trades.
Survey & Access
We inspect the stack from the roof and inside the loft, photograph every defect, and advise plainly on what needs repointing, rebuilding or flashing. Scaffolding or a fixed roof ladder is set so the work is safe from start to finish.
Rake Out & Repoint
Failed mortar is raked out to a sound depth, the joints washed clean, and new mortar repointed in a matched mix — recessed, struck and tooled to the original profile. No smearing on the brick face, no shallow “weather-struck” that sheds in a season.
Brick & Stack Repair
Spalled and damaged bricks are cut out and replaced with matching stock, and any leaning or bulging section of stack is rebuilt true to the line. Bond, brick and mortar all matched so the repair belongs to the building.
Flaunching Renewal
The old, cracked flaunching is removed and a strong weatherproof mortar cap is re-laid around the pot bases, dressed to shed water and finished neat — the stack top sealed against the rain that does the most damage.
Lead Flashing & Soakers
New step flashing, aprons and soakers are dressed around the stack, with counter-flashing chased into the brickwork and pointed solid. The abutment is made weathertight for the long term, not just sealed with mastic that fails in a year.
Pots, Cowls & Handover
Pots are re-bedded and re-fixed, cowls or caps fitted where needed, and the stack waterproofed with a breathable masonry treatment. We clear the roof, walk you round the finished work, and register your warranty.
Why it lasts
Six things every chimney repair gets.
A chimney fails at its mortar, its bricks and its lead. We build all three right — and back the whole repair in writing.
Get a Free Survey- Mortar matched to the original joint profile and the character of the property
- Spalled bricks replaced with matching stock — never patched over
- New lead flashing chased into the brickwork, not just mastic-sealed
- Flaunching renewed to keep the stack top weathertight for years
- Breathable water repellent that protects brick without trapping moisture
- 5-year workmanship warranty on every chimney repair in writing
Beneath the pots
The layers that keep a stack standing.
The mortar, the bricks and the lead are what make a chimney last. Here’s what goes on before the pots go back.
Repointed Brickwork
Failed mortar raked out to a sound depth and repointed with a matched mix — recessed, struck and tooled to the original joint profile so the stack reads as one build.
Flaunching & Mortar Cap
A strong, weatherproof mortar cap re-laid around the pot bases — the stack top sealed against the rain that does the most damage, dressed to shed water cleanly.
Lead Flashing & Soakers
New code-4 and code-5 step flashing, aprons and soakers dressed around the stack, with counter-flashing chased into the brickwork — a weathertight abutment for decades.
How it works
Four steps to a chimney that lasts.
Free Chimney Survey
We inspect the stack inside and out, photograph every defect, and tell you plainly what needs repointing, rebuilding or flashing — and what can wait.
Honest Written Quote
A fixed-price repair proposal — repointing, bricks, flaunching, leadwork, pots and a firm date. No vague allowances, no pressure to rebuild what a repoint will solve.
The Repair
Safe access set, failed mortar raked out, bricks and lead renewed, flaunching re-laid. A dedicated crew, daily cleanup — most chimney repairs finished in one to two days.
Walkthrough & 5-Year Warranty
We clear the roof, walk you round the finished stack, leave the site spotless, and register your 5-year workmanship warranty before we drive off.
Completed chimney work
Chimney repairs, finished and warrantied.
A few recent chimney repoints, rebuilds and leadwork jobs across Co Durham, Teesside & Tyne and Wear — every stack built to spec and backed in writing.
Rebuilt chimney stack
Tyne and Wear
Repointed terrace stack
Co Durham
Re-bedded pots & cowl
Teesside
New flaunching & cowl
Teesside
Lead flashing detail
Co Durham
Matched repointing
Tyne and Wear
Word of mouth
Neighbours talk. Dry chimney breasts prove it.
“Our 1903 terrace chimney was shedding mortar onto the roof and the bedroom wall was damp. Corner Stone raked it all out and repointed the stack in a day, matched the mortar colour, and the wall has dried out completely. Proper craftsmen.”
“A leaning stack with spalled bricks — two firms wanted to take the whole chimney down. Corner Stone rebuilt the top four courses, matched the bricks, and dressed new lead flashing. Saved the stack, saved us a fortune, and it looks original.”
“Damp on the chimney breast every winter. They repointed the stack, renewed the flaunching, fitted a cowl, and treated the brickwork. Bone dry since, and the 5-year warranty is in writing. Fair price, tidy lads.”
Straight answers
Chimney repair questions, answered plainly.
Related roofing services
One crew for the whole roof — explore the rest.
Corner Stone Roofing & Maintenance handles every layer above your ceiling across County Durham, Tyne and Wear and Teesside. See how the rest of our roofing work fits together.
Free chimney survey
Let’s look at your chimney — on us.
Send the form and we’ll call within one business day to book your free chimney survey and fixed-price estimate. Mortar dropping or a loose pot? Call us straight away and we’ll make the stack safe.