Chimney Stacks · York & Yorkshire
Rebuilds, repointing, new lead flashings, cowls and cappings, the whole stack made safe, watertight and neat, so it stops being the reason you're standing in a damp bedroom looking up.
30+
Years trading
20+
Yrs owner experience
10
Employed roofers
2 hr
Emergency response
10 yr
Workmanship guarantee
What we do
Chimney stack work covers everything above roof line: rebuilds where the brickwork has deteriorated, full repointing where the mortar has failed, new lead flashings at the abutment, replacement flaunching around the pots, and new cowls, caps or gas terminals.
Homeowners with a damp patch on a chimney breast, buyers with a survey flagging 'stack deterioration', and landlords with a leaning stack on an older terrace. Chimneys are usually the oldest and hardest-hit part of any roof.
Cracked or missing mortar joints, spalling brick faces, a stack visibly out of plumb, damp on the chimney breast internally, or a broken pot / cracked flaunching. Left alone, a failing stack sheds masonry, a life-safety issue as well as a leak one.
Chimneys sit exposed on all four sides above the roof, take the full weight of weather, and are usually built to a lower spec than the walls below. They deteriorate first, and they cause a large share of pitched-roof interior leaks.
What happens if it's ignored
A roof issue left alone compounds quickly. Water tracks, timber rots, and repair scope escalates by season. Here's what we see when a customer waits.
Once mortar joints crack, wind-driven rain saturates the brickwork itself. Bricks freeze-thaw, faces spall off, and water tracks down the flue to the chimney breast below.
The lime mortar cap around the pots, the flaunching, cracks every 20–30 years. Once cracked, water gets under the pot base, freezes, and eventually a pot comes loose.
The single most common source of a bedroom-ceiling leak is a failed chimney flashing. Cement fillets crack, old lead cracks, and step flashings that were never cut into a proper chase lift with time.
Older stacks, especially exposed coastal ones, lean over decades of weather. Once past a certain angle they become a life-safety hazard, and insurers will exclude further damage caused by a known-defective stack.
Our process
Chimneys aren't inspected from a ladder. We erect proper scaffold to the ridge level so we can measure, photograph and assess each face safely.
A written fixed-price quote within 6 hours with clear photos, repoint, rebuild-top-half, or full rebuild, and honest guidance on which is right for your stack.
Rake out old mortar, replace spalled bricks, rebuild to original detail, replace flaunching, fit new pot bases and dress fresh lead soakers and step flashings to Lead Sheet Association standards.
Fit new cowls, caps or gas terminals as specified. Water-check the flashings, dress and beat the lead cleanly, and finish the mortar joints struck flush.
Scaffold down, waste removed, and the 10-year written workmanship guarantee in writing.
Why homeowners pick us
A leaning or spalling stack is a life-safety issue as well as a leak one. We assess and act on the structural condition before anything cosmetic.
Correct brick matching, lime or NHL mortar where required, and proper flaunching detail give a rebuilt stack a service life of 50+ years.
All new flashings dressed and stepped to Lead Sheet Association code, the industry standard for durability and appearance.
Scaffold, brick replacement, mortar, lead, cowls and waste all in one written number. No day-rate creep on discovery.
The full workmanship guarantee applies to rebuilds, repointing and flashings alike.
A typical repoint-plus-flashings runs 3 days; a full rebuild 5–6. Timescales are set on the quote, not made up as we go.
The detail
Chimney stacks fail in a handful of predictable ways. Below is how we approach each category, and how the work adapts to Yorkshire's brick and lime-mortar housing stock.
Where a stack is out of plumb, extensively spalled or repointed too many times to be worth another cycle, we take it down to the roof abutment and rebuild in matched brick. Lime or NHL mortar on period property, cement mortar on post-1930s stock, and a fresh lead tray course above the abutment as the definitive weather stop.
For structurally sound stacks with failed mortar, we rake out to a minimum 15mm depth, replace individually spalled bricks with matched reclaimed stock, and repoint with the correct mortar mix for the age of the building. Joints struck flush or slightly recessed to match the original.
The mortar cap around the chimney pots, flaunching, is a wearing item every 20–30 years. We chip out cracked flaunching, seat the pots on fresh sand-cement mortar with the correct fall, and fit a new cowl, capping stone or gas terminal as needed.
Every chimney abutment gets a two-part lead system: soakers under each course of tile, and step flashings cut into a fresh chase in the stack. We dress code 4 or code 5 lead by hand to the profile of the tile, and we do not use cement fillets, they crack, and they're the biggest cause of a re-leak.
Interior damp on a chimney breast usually points to a failing flashing or a saturated stack shedding water down the flue. We survey the stack, the flashings and the internal flue to identify the true cause before we quote, often the fix isn't where the stain is.
Domestic stacks are typically single- or twin-flue on terraces and detached houses. Commercial stack work, light-industrial flues, older mill chimneys, pub and hotel stacks, needs additional scaffold and often permit-to-work coordination, which we handle in the quoted price.
FAQ
A repoint and flashings typically sits between £1,200–£2,200 including scaffold. A rebuild to roof line usually falls in the £2,400–£4,200 range, depending on size, brick spec and access. Every job is quoted fixed after inspection.
Only for the smallest of flaunching repairs, and only where a scaffold tower can be safely erected. For anything involving multiple brick courses or full flashings we insist on proper scaffold, it protects both the trades and the finish.
If the stack is out of plumb, brick faces are spalling in multiple courses, or the mortar has been repaired more than twice already, rebuild is the honest answer. Otherwise a repoint plus new flashings normally restores 20–30 years of service.
Yes, we source reclaimed brick to match the age and coursing of the original stack. Where the entire stack is being rebuilt, we can offer a matched new brick where reclaimed isn't available.
Similar order of magnitude, the scaffold, safe deconstruction and roof abutment reinstatement are the majority of the cost either way. Full removal to a below-roof capping is normally within 10–15% of a rebuild.
Yes, we fit approved gas terminals, anti-downdraught cowls and stove-compatible pot bases. Gas terminal work is signed off separately by a Gas Safe engineer where required.
Most single-flue rebuilds run 3–4 working days on site once scaffold is up. Twin-flue and larger commercial stacks take 5–7 days. We give you a fixed schedule on the quote.
Yes, chimney stack work carries our full 10-year written workmanship guarantee. Lead flashings, brickwork and flaunching all covered.
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Ready when you are
Free survey. Written quote back within 6 hours. 10-year workmanship guarantee. No call-out fee, no pushy follow-ups.
