Chimney Repair Cost Calculator
Instantly estimate the cost of your chimney repair. Calculate crown, flashing, masonry, and flue liner expenses based on height, material, and damage extent.
Project Specifications
Enter your chimney details and the type of repair needed
Select the scale of the damage to adjust the labour and material costs.
Cost Estimation
Labour, materials, and access equipment breakdown
Enter your chimney details and repair type above, then click Estimate Repair Cost.
Common Chimney Repairs & Costs
Average market rates for standard chimney repairs in the UK. Final prices will vary based on regional labour rates and the specific condition of your property.
| Repair Type | Average Cost Range | Description |
|---|---|---|
| Crown Repair | £200 – £450 | Fixes the concrete top that prevents water entry |
| Flashing Repair | £150 – £350 | Seals the joint between the chimney and roof |
| Tuckpointing | £300 – £800 | Replaces deteriorated mortar joints in brickwork |
| Flue Liner | £800 – £1,500 | Replaces the inner clay or metal tube for safety |
| Partial Rebuild | £1,000 – £2,500 | Rebuilds the upper section of the chimney stack |
| Full Rebuild | £3,000 – £6,000+ | Complete tear down and rebuild from roofline |
Chimney Repair FAQ
Everything you need to know about maintaining your chimney, identifying damage, and hiring professionals in the UK.
The cost of chimney repair in the UK typically ranges from £150 for minor flashing fixes to over £5,000 for a full chimney rebuild. On average, tuckpointing (masonry repair) costs between £300 and £800, while replacing a flue liner can cost £800 to £1,500. The final price depends heavily on the chimney’s height, material, and the extent of the damage.
A full chimney rebuild is the most expensive repair, often costing between £3,000 and £6,000+. This is because it requires extensive labour, scaffolding, and materials to safely dismantle and reconstruct the masonry from the roofline down. Replacing a flue liner is also highly labour-intensive and can cost up to £1,500.
Minor repairs like fixing flashing or a small crown patch can be completed in a single day (4-8 hours). Tuckpointing or masonry repairs usually take 1 to 3 days depending on the area. A full chimney rebuild is a major project that can take anywhere from 3 to 7 days, including time for mortar curing and scaffolding setup.
While minor tasks like applying a waterproof sealant or minor crown patching can be DIY projects, most chimney repairs should be left to professionals. Working at height on a roof is extremely dangerous, and improper masonry or flashing repairs can lead to severe water damage, structural issues, or dangerous carbon monoxide leaks into your home.
Common signs that your chimney needs repair include water stains on your ceiling or walls near the chimney, crumbling mortar joints (spalling), a damaged or missing chimney crown, rust on your firebox or damper, and a strong odour of moisture or creosote. If you notice any of these, it is best to book a professional chimney inspection immediately.