How much does chimney repointing cost in Wiltshire?

Full chimney stack repointing (four sides): £300–£600 including scaffold. Spot repointing where only a few joints are failed: £150–£300. Correct mortar specification — lime on historic masonry, flexible on modern brick — is included as standard. Free written quote — call 01249 247 076.

How much does chimney reflashing cost?

Lead reflashing (step, soaker and apron flashings): £350–£750 on a standard stack. Code 4 lead as standard. Wider stacks or complex geometries run higher. Full chimney package including repoint, reflash and flaunching: £700–£1,200.

Does chimney repair always need scaffold?

Full chimney repointing, reflashing and flaunching work always requires scaffold for safe access and quality of work. Minor repairs accessible from the roof slope may be possible from a ridge ladder in some cases. We confirm access requirements in every quote — scaffold cost is always included, never added on.

How do I know if my chimney needs repointing?

Signs include: open mortar joints visible through binoculars from ground level, white salt staining (efflorescence) on the brickwork, damp patches on the chimney breast inside the house, and tiles slipping at the chimney junction. We offer free chimney surveys with close inspection — many issues are only visible from scaffold level.

What mortar should be used for chimney repointing in Wiltshire?

NHL hydraulic lime mortar on all Victorian, Edwardian and historic masonry — never OPC cement, which causes irreversible spalling on soft brick and stone. Flexible polymer-modified mortar on modern post-1950s brick. Using the wrong specification causes more damage than no repointing at all.

Is chimney repair covered by home insurance?

Damage caused by a specific insured event (storm, subsidence, impact) may be covered. Routine mortar deterioration from age and weather is a maintenance issue and generally excluded. Storm-related flashing failures following a weather event may be covered as storm damage. We provide documented assessment reports for insurance claims.

Can I cap off a chimney I no longer use?

Yes — a ventilated chimney cap prevents water ingress while maintaining airflow through the redundant flue. This is the most common approach on disused chimneys. Full removal to roof level is also an option where the stack is structurally compromised or creating maintenance problems. We advise on the most appropriate option during the free survey.

Chimney Repair Costs in Wiltshire

Chimney Repair Costs at a Glance

Repair Type	Cost	Notes
Full chimney repoint (four sides)	£300–£600	Correct mortar, scaffold included
Spot repointing (failed sections only)	£150–£300	Where surrounding mortar is sound
Lead reflash (step, soaker, apron)	£350–£750	Code 4 lead as standard
Flaunching replacement	£200–£400	Per stack, includes pot inspection
Chimney pot replacement	£100–£250 per pot	Includes removal and disposal
Full chimney package	£700–£1,200	Repoint + reflash + flaunching
Chimney cap (disused flue)	£150–£350	Ventilated cap, no flue removal
Full stack removal to roof level	£800–£1,800	Includes scaff and tile repair

What Does Each Chimney Repair Involve?

Chimney Repointing

Chimney repointing is the process of raking out deteriorated mortar joints to a minimum depth of 15–20mm and replacing with fresh mortar. On a standard chimney stack, this involves four sides of the stack above roof level plus the flaunching (the mortar bed securing the pots).

The critical element is mortar specification. Victorian and Edwardian chimney stacks in Chippenham town centre, Corsham and Calne require NHL hydraulic lime mortar — the soft historic brick used in this era cannot tolerate OPC cement, which is harder than the brick and causes the brick faces to spall and crack over time. On modern post-1960s brick, flexible polymer-modified mortar is appropriate. We assess and specify correctly for every property.

Lead Reflashing

Lead flashings around the chimney stack where it meets the roof comprise three elements: step flashings (vertical lead strips cut into the mortar courses on the sides of the stack), soakers (horizontal lead sections beneath each tile course), and the apron flashing at the front of the stack. Together these create a watertight junction between the stack and the tile surface.

When lead flashings fail — from thermal cycling fatigue, incorrect original installation, or simply age — water tracks down the stack base and appears as damp on the chimney breast ceiling inside. The common but incorrect response is to apply sealant over the existing lead. This delays the problem by one to three winters. Code 4 lead replacement is the correct and lasting fix.

Free Chimney Survey

We survey from scaffold level and give honest written findings. Covering Chippenham and all of north Wiltshire.

📞 Call 01249 247 076

Flaunching Replacement

Flaunching is the mortar bed formed around chimney pot bases to secure them to the stack top and shed water away from the flue opening. Over decades, flaunching cracks from thermal cycling and freeze-thaw action. Cracked flaunching allows water into the stack, accelerates internal mortar deterioration, and can cause pot instability.

Flaunching replacement is a standalone job that takes half a day per stack. It's one of the more cost-effective chimney maintenance interventions — typically £200–£400 per stack — and prevents water ingress that would otherwise damage the stack top and flue structure.

The Lime Mortar Requirement in Wiltshire's Historic Towns

This is worth understanding before commissioning any chimney work in Chippenham's conservation area, Corsham, Box, Lacock, Bradford-on-Avon or Devizes. Historic brick and stone — pre-1920s construction — requires lime mortar. OPC cement, introduced in the mid-20th century, is significantly harder than the original masonry and causes irreversible damage when used on soft brick or stone: the brick face spalls and breaks away as the harder cement cracks and expands.

We carry NHL 2.5 and 3.5 hydraulic lime as standard for all north Wiltshire chimney visits. We never use cement on historic masonry. A roofer who uses cement on your Victorian Chippenham chimney is causing long-term damage, however good the short-term appearance.

Wiltshire Climate Factors Affecting Chimney Maintenance

Malmesbury's exposed hilltop position makes it the highest-maintenance chimney location in our coverage area — more thermal cycling, more wind loading, more frequent mortar fatigue. We recommend chimney inspection every 5 years on Malmesbury properties with original or older lead flashings.

Melksham and Bradford-on-Avon's Avon Valley moisture accelerates lead corrosion compared to drier chalk ridge locations. Code 5 lead is recommended on exposed or valley-facing stacks in these locations, where standard code 4 can corrode significantly faster than the expected service life.

How to Get a Fair Chimney Repair Quote

Ask what mortar will be used — lime on historic masonry is non-negotiable.
Ask what lead code is specified — code 4 minimum for flashing work.
Confirm scaffold is included — it should be in the base price, not added as an extra.
Get written specification — not just a total price.
Avoid sealant-only quotes — resealing over failed lead flashings is not a repair.