Owner
9 min read
Leadwork is the formed lead sheet at chimneys, valleys and wall junctions that keeps water out when slates and stonework meet.
Most lead leaks in Stirling, Alloa and Dollar come from cracked pointing in the chase, splits from restricted movement, or bad laps after a patch job.
Expect £350 to £1,200 for small repairs and £1,200 to £3,000 for a full chimney reflash with scaffold, with complex heritage gutters and valleys running higher.
On most Scottish roofs, the slates do the big job, but the leadwork does the clever job. Leadwork is the shaped lead sheet that seals all the awkward joins, chimney to slate, slate to wall, valley lines, parapet gutters, dormer cheeks. In Stirling, Alloa and Dollar, where we have a lot of sandstone villas, tall chimneys and junction heavy roofs, it is usually the first place a small defect turns into a proper leak. Done right, rolled lead to BS EN 12588 and detailed for movement (BS 6915), it lasts a long time. Done badly, it fails fast and soaks ceilings, sarking and insulation.
Leadwork on a roof normally means rolled lead sheet, cut, formed and fixed into weatherings and flashings. It is not there for looks, it is there because water always finds the join. Slates and tiles are brilliant on the open field of the roof, but at junctions, like a chimney or a wall abutment, you need something that can be shaped tight, lapped properly and still cope with movement. Lead is still the standard choice on a lot of Scottish housing because it suits stonework, it can be dressed into awkward corners, and it works with slate gauges and traditional details.
When we price leadwork in Stirling and Clackmannanshire we look at two things first: how the detail is built up, and whether it allows the lead to expand and contract. A lot of “mystery leaks” are not mystery at all, they are lead forced into being rigid. The rule of thumb from BS 6915 is that lead needs the right length limits, laps, and fixings so it can move without splitting. If it is pinned too hard, or chased and pointed badly, it cracks or lifts and the water gets behind.
– William Young, Owner
On Central Scotland roofs, lead turns up in the same high risk spots. Chimneys are top of the list, front apron, side step flashings, and the back gutter (sometimes called a saddle). If the chase joint in the stone or brick opens up, wind driven rain gets straight behind. We see it a lot on older chimneys in Stirling town centre and around Dollar, where the masonry is soft and old pointing has started to powder. Lead is also used at wall abutments where a pitched slate roof runs into a gable wall, normally with step flashing and soakers underneath.
Valleys are another big one, especially open lead valleys on slate roofs. You often have valleys feeding a lot of water, then one tiny split or a nail hole becomes a steady drip into the sarking board. Dormers and rooflights add more junctions, and more lead. Then there are parapet and box gutters, common on tenements and some villas in Alloa, where water has nowhere to go if a downpipe blocks. When you are planning other work, like replacing slipped slates or renewing underlay to BS 5534, it is worth checking lead at the same time, it ties in with roofing and avoids doing scaffold twice.
Aprons, step flashings and back gutters, plus the chased joint into stone or brickwork.
Step flashing and soakers where slate meets a gable or dormer cheek.
Open lead valleys on slate roofs, and valley junctions around dormers and hips.
Lead lined gutters on older buildings, high risk in storms and freeze thaw.
The first sign is usually inside. After heavy rain, especially the long soaking spells like Storm Babet brought, you might see a brown stain on the chimney breast, a damp patch at the top of a party wall, or wet plaster around a dormer. Outside, look for lifted edges, visible splits, or lead that has started to “oil can” and sit proud. If the lead looks cracked along a line, that is often movement stress. If it is green and intact but the wall joint is open, that is usually failed pointing in the chase, and water is tracking behind.
In Stirling and Alloa we also see parapet gutter failures where water overflows and runs down inside the masonry. That can look like a “roof leak” but the real issue is the gutter lining, poor falls, pinholes, or blocked outlets. After back to back wind events like Storm Isha and Storm Jocelyn, you can get secondary damage too, a couple of slates lift, wind driven rain gets into the soakers, and a small gap becomes a steady leak. If you are seeing active drips, call it in and treat it as a roof repair issue, water into sarking and insulation is where costs jump fast.
Repair is right when the lead is fundamentally sound and the leak is local, like a failed chase joint, a slipped step flashing, or one split at a nail. A proper repair means lifting slates where needed, checking soakers, checking the breathable membrane, and making sure the lap and dressing are correct. It is not just mastic on the top edge. If you are already getting other work done, like slate work, it is worth reading our guide on roof flashing basics (Article 12) and how junctions should be built.
Replacement is usually the better call when the lead has been patched repeatedly, when it is cracked in multiple places, or when it was installed with the wrong lengths and cannot move. We also recommend replacement when a re roof is underway and the detail does not meet current best practice, because once the slates are off you can do it properly and avoid call backs. On older slate roofs, we often see a mix of lead and cement fillets from past repairs. Cement might look tidy for a year or two, but it is not a long term waterproofing detail. If the water is getting behind it, it will lift in frost and you are back to square one.
– William Young, Owner
Heritage roofs in Stirling, Alloa and Dollar are usually junction heavy. You have tall chimneys, stone skew copes, dormers, parapets, and sometimes box gutters that run behind a parapet wall. Lead is often the right material because it is traditional, it can be formed to match existing details, and it does not look out of place on sandstone. Conservation officers tend to care about like for like repairs, keeping original lines, and not introducing shiny substitute flashings on a visible elevation. Historic Environment Scotland guidance backs the idea of compatible materials and details on older buildings.
It is also worth understanding that a roofing job can trigger modern requirements if you change the build up, even when the outside looks the same. If we lift slates and renew underlay, we are thinking about ventilation, condensation risk, and fixings in line with BS 5534, especially after the kind of winds we have seen since 2024 and the warnings around Storm Éowyn in 2025. On slate properties, leadwork and slating are tied together, so if your roof is Welsh or reclaimed Scotch slate, have a look at slate roofing and our slate repair guide (Article 7) for what usually fails first.
Leadwork costs are mainly driven by access and complexity. A small patch to an apron or a short run of step flashing, where we can work safely off a ladder and the roof pitch is sensible, is typically £350 to £650. Once you need scaffold, which is common on villas and anything over a conservatory, the same repair is more like £650 to £1,200 because the scaffold is often the biggest line item. Replacing full chimney flashings with a proper back gutter and new chase pointing is usually £1,200 to £2,500 on a typical Stirling semi, and £2,000 to £3,500 on taller stone properties in Dollar where access is tighter.
Open lead valley replacement on a slate roof is commonly £1,500 to £3,000 per valley run depending on length, slate gauge, and how much surrounding slate needs lifted and re fixed. Parapet and box gutter renewals can be £2,500 to £6,000 because they are labour heavy, you are often rebuilding outlets, correcting falls, and protecting internal finishes. Quotes may be plus 20% VAT if the contractor is VAT registered. If you are bundling roof work with qualifying insulation upgrades, there can be VAT relief on the energy saving part until 31 March 2027, but leadwork itself is not an energy saving material. If the job is part of bigger water ingress work, our roof repair guide (Article 3) explains how we scope it so you are not paying twice.
If you remember one thing, it is this: most roof leaks start at the joins, not in the middle of the slates. Leadwork is what protects those joins, chimney to roof, roof to wall, valleys, parapets, and it takes a hammering in Scottish weather. When it is detailed properly, with the right laps, correct fixings, and movement allowed for, it is one of the best long life solutions you can fit. When it is bodged with sealant or cement, it usually comes back round after the next storm.
If you are in Stirling, Alloa or Dollar and you have staining near a chimney, damp at a party wall, or you have had slates lifting in wind, get it checked sooner rather than later. We can often sort leadwork issues as part of a targeted roof repair, and if the wider roof needs attention we will tell you straight. For larger projects, we can scope it as part of roofing work so the junctions, sarking condition, battens and breathable membrane all make sense together.
If your roofer is VAT registered, expect quotes to be plus 20% VAT for most repairs. If you are doing a wider roof upgrade that includes qualifying insulation, the energy saving element can be treated differently until 31 March 2027.
Call a roofer if you can see water staining after rain, if the leak shows up only in wind driven rain, or if the lead is visibly split or loose around a chimney or valley. On older properties, do not assume it is “just a bit of pointing”, water can track along the underside of slates, soak the sarking and show up a metre away.
If you are in a conservation area in Stirling or dealing with a listed building in Dollar, get advice before changing visible details or materials. We will survey the junctions, check the chase, laps and soakers, and tell you whether it is a repair, a reflash, or a bigger roof scope. We cover Stirling, Alloa, Falkirk, Dunblane and the wider Central Scotland area. Call 01259 726404 or message us on WhatsApp.
Leadwork is the shaped rolled lead sheet used to seal roof junctions, like chimneys, wall abutments, valleys and parapet gutters. On many Stirling sandstone villas it is the main waterproofing detail around chimneys and dormers where slates meet stone.
Properly specified rolled lead (BS EN 12588) and installed with movement allowances (BS 6915) is a long life detail, often decades. Early failure in Scotland is usually down to restricted movement, poor laps, or chased joints that have lost their pointing after storms.
Most leaks come from failed pointing in the chase, a split caused by thermal movement, punctures, slipped sections, or laps that are too short. After a wet spell like Storm Babet, a small gap can start tracking water behind the lead and into the sarking.
I would not recommend it, roof work at height is high risk and lead detailing needs correct laps and movement detailing to avoid repeat leaks. On listed or conservation properties in places like Stirling and Dollar, you can also need permissions for visible changes, so it is best surveyed and specified properly.
William has spent over two decades on Scottish roofs, working from apprentice slater to running a Stirling-based team that re-roofs villas and repairs storm damage across the central belt. He writes about roofing the way he talks on a survey: straight, costed and honest.
40+ yrs combined experience · Stirling · NFRC member
Chimney flashings, valleys, soakers, parapet gutters and Code 4 or Code 5 lead to suit the detail.
Targeted fixes for slipped slates, broken tiles, valleys, and leak tracing across Stirling and the Central Belt.
Full roof scopes that tie slating, underlay, battens and leadwork details together properly.