Chimney Repairs, Rebuilds & Repointing

Chimney Repairs Explained

What Does a Chimney Repair Involve?

Chimneys take more weather than any other part of a roof, and most repairs fall into a handful of jobs. Riverstone Roofing Ltd repoints eroded mortar joints, renews cracked flaunching around the pots, replaces failed lead flashings and trays, rebuilds stacks partially or completely where the brickwork has decayed, refits or replaces pots, and caps and vents disused flues so they stop taking in rain. We work off proper access with full insurance, because chimney work sits at the highest and most exposed point of a building. A stack that is visibly leaning needs looking at quickly, as that usually indicates sulphate attack from an unlined flue expanding the mortar on one side. Damp appearing on a chimney breast indoors is normally a failed flashing or saturated brickwork rather than the flue. Free written quotes, fixed prices agreed before starting, and guaranteed work.

24/7

Emergency Cover

The Service

Sound Chimneys,
Safe & Watertight

Exposed at the highest point of your roof, chimneys take a battering from the weather. Eroded mortar, cracked flaunching and failed flashings let water in and can make a stack unstable — leading to damp, staining and costly damage if ignored.

We repair and restore chimneys of all kinds — from repointing and re-flaunching to full or partial rebuilds, lead flashing renewal and capping unused stacks — leaving them safe, solid and weatherproof.

Safe Working at Height

Fully equipped and insured for safe, high-level chimney work.

Watertight Restoration

Repointing, flaunching and lead renewed so water stays out.

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How It Works

Our Chimney
Repair Process

From a quick repair to a full restoration, handled safely and properly.

Inspection

We assess the brickwork, mortar, flaunching, pots and flashings from a safe access point.

Honest Quote

A clear explanation and a fixed price for the work needed.

Safe Access

Scaffold or appropriate access is set up for safe high-level work.

Repair / Rebuild

We repoint, re-flaunch, renew flashings or rebuild the stack as required.

Cap & Weatherproof

Pots, cowls or caps are fitted and all junctions sealed against the weather.

Inspect & Clean Up

A final check, then all debris removed and the area left clean.

What We Do

Chimney Repairs
We Carry Out

Everything needed to keep your chimney safe and weatherproof:

Repointing

Rake out eroded mortar and repoint the brickwork for strength and weather resistance.

Re-flaunching

Renew the mortar flaunching that beds and seals the chimney pots.

Lead Flashing Renewal

Replace failed or missing flashings where the stack meets the roof.

Rebuilds (Full & Partial)

Rebuild unsafe or badly-eroded stacks, matching the existing brick.

Capping & Cowls

Cap off unused chimneys or fit cowls to stop rain, birds and downdraught.

Chimney Removal

Safely remove redundant stacks and make the roof good and watertight.

Know the Signs

Does Your Chimney
Need Repairs?

A chimney takes more weather than any other part of a roof. These are the faults we find most often, running from routine maintenance to genuinely urgent.

Crumbling or missing mortar jointsRepointing is the most common chimney repair there is. Once the joints recede, water soaks straight into the brickwork.
Flaking or spalling brick facesFrost damage. Water gets into the brick, freezes, expands and pushes the face off.
A cracked or loose potPots are bedded into the flaunching. When that cracks the pot can move, and eventually come down.
Broken flaunchingThe mortar cap around the pot sheds water off the top of the stack. Cracks in it let water straight down inside.
Damp on the chimney breast indoorsStaining on a bedroom or lounge wall usually points to failed flashing or brickwork that has become saturated.
A stack that is leaningSulphate attack from an unlined flue expands the mortar on one side and tilts the stack. This one needs looking at quickly.
Plants growing out of the brickworkRoots hold water against the stack and force the joints apart as they grow.
No cowl on a disused flueAn open, unused flue takes in rain and drives damp down through the chimney breast.

The Work

Restored & Weatherproof

Repointing

Re-flaunching

Lead & weatherproofing

Questions & Answers

Chimney Repair FAQs

What homeowners most want to know about chimney repairs. Got another question? Call us.

Tell-tale signs include crumbling mortar, white staining, damp patches on internal chimney breasts, a leaning stack or plants growing in the brickwork.

Flaunching is the sloped mortar bed on top of the stack that holds the pots and sheds water. Cracked flaunching is a common cause of leaks.

Yes — we carry out everything from minor repointing to partial or full rebuilds, depending on the condition.

Very often, yes. Failed lead flashing where the stack meets the roof is one of the most common chimney leaks, and renewing it usually fixes it.

Yes — we can cap unused stacks (with ventilation) or fit cowls to keep rain and birds out while preventing damp.

We can safely remove redundant stacks and make the roof good with matching tiles and proper weatherproofing.

Yes — fully insured, with our workmanship guaranteed.

Chimney repairs across Lincolnshire, Cambridgeshire and Norfolk — Spalding, Boston, King’s Lynn, Peterborough, Grantham, Wisbech, Stamford and surrounding areas.

Where We Work

Chimney Repairs
Across the Region

We provide chimney repairs for homeowners across Lincolnshire, Cambridgeshire and Norfolk, including Grantham, Sleaford, Stamford, Bourne, Spalding, Boston, Skegness, Peterborough, Wisbech, March, Chatteris, King’s Lynn, Downham Market, Swaffham and Hunstanton. View all the areas we cover, or call 07782 664697 for a free, no-obligation quote.

At a Glance

Riverstone Roofing Quick Facts

Experience: Over a decade of local roofing experience; Riverstone Roofing Ltd incorporated January 2026

Areas Covered: Lincolnshire, Cambridgeshire & Norfolk

Services: New roofs, pitched & flat roof repairs, leadwork, chimneys, fascias & guttering, roof cleaning

Availability: 24/7 emergency call-outs · Free, no-obligation quotes

Credentials: Fully insured roofing contractor

Contact: 07782 664697 · contact@riverstoneroofing.co.uk

Get In Touch

Get Your Free
Roofing Quote

Tell us what you need and we’ll get straight back to you with a free, no-obligation quote — or call us any time, day or night.

07782 664697

Free QuotesFully Insured24/7 Cover

Chimney Repairs &
Restoration.

What Does a Chimney Repair Involve?