Chimney Repointing
Failed mortar removed and replaced with lime mortar.
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Restore Your Chimney's Integrity with Professional Repointing
Deteriorating mortar joints let water into your chimney stack and your home. Our lime mortar specialists rake out failed mortar and replace it with matching traditional mixes, restoring weatherproof integrity to London's Victorian and Edwardian stacks
- Traditional hot-mixed lime mortar for period property authenticity
- NHL 3.5 and Natural Cement mixes matched to original specifications
- Conservation-approved techniques for listed buildings
Roof Repair London
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20+ Years Experience
Free Roof Inspection
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Chimney Repointing Projects Across London
Completed repointing on Victorian and Edwardian properties.
Roof Repair – Bermondsey, SE1
Flat Roof Replacement – Croydon, CR0
Slate Roof Restoration – Greenwich, SE10
Commercial Re-Roof – Canary Wharf, E14
Gutter Installation – Chelsea, SW3
Chimney Repointing – Islington, N1
Tile Replacement – Wembley, HA9
Emergency Leak Repair – Hackney, E8
Roof Insulation – Richmond, TW9
Velux Window Install – Hampstead, NW3
Lead Flashing – Westminster, SW1
Storm Damage – Battersea, SW11
Flat Roof Coating – Brixton, SW2
Fascia & Soffits – Fulham, SW6
Roof Survey – Kensington, W8
Moss Removal – Wimbledon, SW19
GRP Fibreglass Roof – Peckham, SE15
EPDM Rubber Roof – Stratford, E15
Zinc Roofing – Shoreditch, EC2
Roof Waterproofing – Clapham, SW4
Why London Heritage Properties Trust Us With Repointing
Traditional skills, authentic materials, lasting repairs.
20+ Years Experience
Trusted roofing expertise across London since 2004.
Fully Insured Company
Complete insurance coverage for your peace of mind.
Fast Response
Rapid response times across all London boroughs.
100% Satisfaction
We guarantee quality workmanship on every project.
Quality Materials
Only premium, industry-leading roofing materials used.
Complete Chimney Repointing Services for London
Lime mortar restoration and brickwork repair.
Stack Crack Repair
Structural cracks in chimney brickwork repaired.
Learn MoreFlaunching Repair
Chimney pot seating restored with waterproof mortar.
Learn MoreSpalled Brick Replacement
Frost-damaged bricks replaced with matching reclamation.
Learn MoreChimney Capping
Weatherproof caps fitted to prevent rain entry.
Learn MoreFull Stack Rebuild
Complete chimney reconstruction where required.
Learn MoreChimney Needs Repointing? Book a Free Survey in London
Our Chimney Repointing Process
Careful assessment, traditional techniques, lasting results.
Book Free Inspection
Schedule your free roof inspection online or by phone.
Roof Assessment by Experts
Our certified roofers thoroughly inspect your roof.
Transparent Quote & Repair
Receive a detailed, no-obligation quote and we get to work.
Chimney Repointing London - All Areas Covered
Chimney repointing across all London boroughs.
Camden
Hackney
Islington
Westminster
Southwark
Lambeth
We serve all London boroughs within 24 hours.
Our Google Reviews
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James Wilson
Croydon, South London
"KS Roof Master did an outstanding job repairing our roof after storm damage. Fast response, fair pricing, and excellent workmanship."
Sarah Thompson
Islington, North London
"We had a leaking flat roof that other companies couldn't fix. KS Roof Master diagnosed the issue quickly and the repair has been perfect."
David Patel
Greenwich, East London
"Professional from start to finish. The free inspection was thorough and the quote was transparent with no hidden costs."
Chimney Mortar Failing or Stack at Risk? Contact Us Immediately
Rapid assessment and temporary protection while repairs are planned.
Mortar crumbling
Stack leaning
Bricks loose
Water ingress
Chimney Repointing Costs in London
Transparent pricing for repointing specifications.
| Service | Starting Price |
|---|---|
| Chimney Condition Survey | FREE |
| Repointing (per m²) | £90-£120 |
| Crack Repair (per crack) | £150-£250 |
| Flaunching Repair (per pot) | £85-£120 |
| Spalled Brick Replacement (per brick) | £25-£35 |
| Full Stack Rebuild | £1,500-£3,500 |
* Final costs depend on stack size, access complexity, and conservation requirements.
Book Your Free Chimney Survey
We assess mortar condition and provide honest repair recommendations.
- Full roof condition report
- Photo documentation of all findings
- Expert repair recommendations
- Transparent cost estimate
Claim Your Free Report
Chimney Repointing Questions Answered
Technical guidance on lime mortar restoration.
Original Victorian and Edwardian mortar is typically 1:3 lime:sand — softer than the bricks it beds. London's climate accelerates decay: winter freeze-thaw cycles expand moisture in open joints, summer drought shrinks the mortar, and wind-driven rain penetrates deeply. The mortar fails before the brickwork, which is actually protective — it signals the need for repointing before the bricks themselves deteriorate.
Lime mortar is softer and more permeable than cement — it flexes slightly with building movement without cracking, and allows moisture to evaporate from the structure. Portland cement is harder than the bricks — it traps moisture, causing spalling and frost damage. For listed properties and conservation areas, lime mortar is explicitly required by heritage officers and planning conditions.
We conduct a mortar analysis: sample extraction and visual examination identifies the original aggregate (typically London sand with possible ash or brick dust), mix ratio, and any additives. New mortar is batched using the same aggregate sources, with colour-matched sharp sand and appropriate lime binder. Trial mixes are prepared and approved before full application.
The process: scaffolding erected and protected, loose mortar raked out by hand (not power tools) to a depth of 25-30mm, mortar joints cleaned of dust and debris, mortar applied in layers with proper curing between each, pointing finished to match the original profile (flush, weatherstruck, or tuck pointed), scaffolding removed, and site cleared.
Lime mortar requires temperatures above 5°C and protection from frost during curing — typically 7-14 days depending on exposure. We monitor weather forecasts and schedule works during suitable conditions. Emergency repairs can use rapid-set hydraulic lime in slightly cooler conditions.
Typical chimney repointing takes 3-5 working days depending on stack size and deterioration extent. Scaffold erection and removal each take a day; the repointing work itself depends on the number of courses requiring attention. We always leave the chimney weatherproof at the end of each day.
Preserve Your Chimney with Professional Repointing — Book a Survey
Traditional skills that protect London's heritage.