Chimneys are the most maintenance-intensive part of most British houses. They project above the roofline, exposed to wind and rain from all sides, and the mortar joints and lead flashings that keep them watertight are working constantly against weathering, thermal movement and biological growth. In Birmingham’s Victorian and Edwardian terrace streets, where virtually every house has at least one chimney stack, chimney repairs are one of the most common roofing jobs I carry out.
This guide covers the typical cost of every type of chimney repair I carry out, with honest figures based on what I charge on Birmingham properties in 2026.
The scaffolding question
Before getting into individual repair costs, it is worth addressing scaffolding, because it has an outsized effect on chimney repair costs. Almost all chimney work above single-storey level requires scaffolding for safe access — and scaffolding is expensive relative to the repair itself on smaller jobs.
On a typical Birmingham two-storey terrace, scaffolding to reach a chimney stack costs approximately £600–£900 for a short-duration hire. On a larger or more complex property, or where access from the road is restricted, that can rise to £1,200 or more. This cost is the same whether you are spending twenty minutes replacing flashing or a full day repointing the stack — which is why it is usually worth combining chimney repairs with any other work that requires roof access at the same time.
Lead flashing replacement: £450–£1,100
Lead flashing seals the joint between the chimney stack and the roof surface. A chimney has multiple sections of flashing: the apron at the front, step flashing up each side, and the back gutter behind the stack. Over time, the lead can crack with age and thermal cycling, or pull away from the mortar joint in the brickwork where it is wedged and pointed in.
Replacing the full set of lead flashings on a standard chimney stack typically costs £450–£700 for materials and labour on a property where scaffolding is already in place. Add scaffolding and the total cost rises to £1,000–£1,100 for a straightforward job on a two-storey terrace.
A common mistake I see is chimneys where failed lead has been repaired with self-adhesive flashing tape or flexible sealant compounds. These are short-term fixes that typically fail within a few years and can make proper lead work harder to install subsequently. If your chimney has been repaired this way, a proper lead replacement is worth doing before the underlying brickwork is affected by repeated water ingress.
Chimney repointing: £400–£1,200
Repointing involves raking out the deteriorated mortar between the brickwork courses and replacing it with fresh mortar. The mortar joints on a chimney stack are exposed to full weathering on all faces and typically need attention every 30–50 years. On older properties, the original lime mortar can last longer than modern cement mixes — hard cement pointing on a Victorian stack can actually accelerate brickwork deterioration by preventing the natural movement that lime accommodates.
A standard chimney repointing job on a two-storey Birmingham terrace costs approximately £400–£600 for labour, excluding scaffolding. Add scaffolding and the total is typically £1,000–£1,200. On taller or more complex stacks, or where significant areas of brickwork need attention, costs can be higher.
The mortar specification matters. I always use a lime-based mortar on older properties and match the mortar composition to the existing as closely as possible. Using a standard modern cement mix on Victorian brickwork creates problems down the line — it is harder than the brick, which means the freeze-thaw cycle damages the brick face rather than the mortar joint.
Flaunching repair or replacement: £150–£350
Flaunching is the sloped cement fillet around the base of chimney pots that holds them in place and sheds water away from the stack top. It is one of the first things to crack and fail on older chimneys because it is fully exposed at the top of the stack with no shelter. Cracked flaunching allows water into the stack top and can allow pots to become loose or topple.
Repairing or replacing the flaunching on a standard chimney costs £150–£350 for labour and materials, excluding scaffolding. It is a relatively quick job once access is established, which is another reason to combine it with other chimney or roof work when scaffolding is already up.
Chimney pot replacement: £100–£300 per pot
Chimney pots can crack or break in severe weather, or become loose when the flaunching beneath them fails. Replacing a standard terracotta pot costs £100–£300 per pot including labour and materials, depending on pot size and style. On period properties in conservation areas, matching the original pot profile matters — I always try to source appropriate replacement pots that match the existing where possible.
If a chimney is no longer in use (most Birmingham terraces have long-disused flues), capping or cowling the pots prevents rainwater ingress down the flue and eliminates the ongoing maintenance cost of flaunching. A simple rain cap costs very little and eliminates a recurring source of damp.
Partial stack rebuild: £800–£2,500
When a chimney stack has deteriorated beyond what repointing can address — spalled brickwork, structural movement, or significant sections of failed masonry — a partial rebuild is required. This involves dismantling the stack down to a sound course of brickwork and rebuilding from there with new matching bricks and lime mortar. It is significantly more labour-intensive than repointing and costs correspondingly more.
A partial stack rebuild typically costs £800–£2,500 depending on how far down the rebuild needs to go and the accessibility of the stack. Full stack rebuilds — where the entire stack above roof level is dismantled and rebuilt — can cost £3,000–£5,000 or more on complex properties.
Getting the timing right
The most cost-effective time to deal with chimney repairs is when you already have scaffolding up for another reason — a roof re-tiling, a full guttering replacement, or a major repair job that requires access. The scaffolding cost, which is the biggest variable in chimney repair pricing, is then shared across multiple jobs.
If chimney work is the only job required, it still makes sense to deal with it promptly. A failed flashing or deteriorating repointing allows water into the stack and into the property below. The cost of repairing timber damage from sustained water ingress consistently exceeds the cost of the chimney repair that would have prevented it.
I carry out chimney and leadwork repairs across Birmingham and the wider area. Free surveys are available — get in touch to arrange a visit.