Chimney StackRepointing.
Friable mortar raked out to 15mm and repointed in weather-struck NHL 3.5 lime — keeps damp out of the breast.
From £320
Price
Half-day · 2 roofers
Duration
10-year on pointing
Warranty
London-wide
Coverage
— Overview
What this job actually involves.
A failed chimney stack is the most common source of internal damp on Victorian and Edwardian London houses. The mortar has carbonated and dropped out, leaving every joint open to wind-driven rain. We rake out to 15mm depth, brush clean and repoint in NHL 3.5 hydraulic lime — the only mix that's both breathable enough for soft brick and strong enough for an exposed stack.
— Signs you need this
Five things we look for first.
Visible mortar joints recessed or empty on the stack
Damp patch on the chimney breast that gets worse in winter
Spalling brick faces where water has frozen in joints
Vegetation growing in the joints
Stack visibly leaning by more than 10mm off plumb
— Included in the price
A fixed price means a fixed scope.
No hidden extras. Materials, access, disposal and a written guarantee are all in the headline number.
- Joints raked out to 15mm depth on all four faces
- Brushed clean and dampened pre-pointing
- NHL 3.5 hydraulic lime mix in two passes
- Weather-struck finish that sheds water outwards
- Flaunching inspected and re-pointed if needed
- Photo sign-off + 10-year written guarantee
— On the day
How we work, step by step.
Rake out
Joints raked out with a 6mm bolster and lump hammer — no angle grinder, which can crack soft Victorian stock brick faces.
Brush & damp
Joints brushed clean and dampened with a fine mist spray. Damp brick draws less water out of the lime mix and stops shrinkage cracking.
Lime mix
NHL 3.5 hydraulic lime + sharp sand 1:2.5 by volume. Two passes — flush coat first, weather-struck finish second pass next day.
Cure
Hessian draped over the stack and dampened daily for 3 days to slow the cure. Critical step that most contractors skip.
— Materials & kit
What we bring to the van.
The unglamorous detail that decides whether a fix lasts five years or twenty-five. We use trade-grade or manufacturer-spec materials only — never builders' merchant own-brand.
- NHL 3.5 hydraulic lime
- Sharp sand (yellow building sand)
- Hessian for slow cure
- Lime wash if you want a matched finish
— Why book with EG Roofing
The from £320 you see is the from £320 you pay.
Eight advantages built into every fixed-price small job — the things our customers tell us actually matter.
Fixed price, no surprises
Quoted before we arrive. Materials, access and disposal are all in the headline number.
Booked by the half-day
Most jobs slotted within 5–7 working days. Same-week for active leaks.
10-year on pointing
Written workmanship guarantee on every job, lodged to your email after sign-off.
Before & after photos
WhatsApp photo sign-off before payment — you see the fix even if you're at work.
12+ years on London roofs
Same two-roofer crews — never sub-contracted. Public liability cover £2m.
4.9★ on Google & Checkatrade
Hundreds of reviews from SW19, CR0, BR1, SE and Central London commercial.
Clean site, zero debris
Drives and borders sheeted, all waste taken away in our van — no skip required.
One direct point of contact
WhatsApp the same roofer who quoted you — no call-centre, no chasing.
— Flexible payment
Spread the cost. Interest-free.
Pay how it suits you. Split this from £320 job into 3 interest-free instalments with Klarna or Clearpay, settle in 30 days, or pay by card, bank transfer or cash on completion. Your choice — we don't add a surcharge.
3 interest-free payments — first today, then every 30 days. Soft credit check, instant decision.
e.g. £320 → 3 × £107
4 fortnightly payments — pay over 6 weeks, no interest, no fees if paid on time.
e.g. £320 → 4 × £80
Card on completion
Tap, chip + PIN or contactless via Stripe terminal. Visa, Mastercard, Amex. Receipt by email.
Bank transfer or cash
Faster Payments on the day, or cash on completion. VAT receipt issued for landlords and small businesses.
Klarna and Clearpay are FCA-regulated payment providers. 18+, UK residents, subject to status. Missed payments may affect your ability to use these services. Full T&Cs at klarna.com and clearpay.co.uk.
— Frequently asked
3 answers before you book.
Why lime, not cement?
Cement is too hard for Victorian soft brick — it traps moisture, causes the brick face to spall and the joint cracks. Lime breathes and lets the brick dry out naturally.
Can you do half a stack?
Technically yes, but it usually fails at the boundary. We always quote all four faces — it's a half-day either way.
How long until I can light a fire?
Lime takes 28 days to fully cure. The stack is structurally fine after 3 days, but for a working flue we'd wait the full 28.
— Free quote in 5 steps
Book your chimney stack repointing.
Five quick taps and it lands straight in our WhatsApp — same crew who'd do the job. From £320 · Half-day · 2 roofers.
— Free quote · 5 quick steps
Book chimney stack repointing
Book it.Sorted this week.
From £320 · Half-day · 2 roofers · 10-year on pointing. Klarna & Clearpay accepted.
— Often booked together
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