Specialist lead roofing and flashing work across Allestree and the DE22 area. Chimney step flashings, valley linings, bay window roofs, parapet capping and flat lead roof sections — all in correctly specified Code 4 or Code 5 lead with a 10-year workmanship guarantee.
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A Allestree lead valley or flashing failure lets water into the awkward parts of the roof. Allestree's larger 1930s–1960s detached and semi-detached homes generally have good driveway access for towers, though mature front trees can complicate scaffold on the older Park roads. Allestree's elevated ground north of the city catches more wind, and the heavy tree canopy near Allestree Park sheds leaves that block gutters and grow moss on shaded slopes. We renew it to last decades.
Allestree sits under Derby City Council, and we handle the local permit side — scaffold licences and skip permits — as part of the job. Allestree's larger 1930s–1960s detached and semi-detached homes generally have good driveway access for towers, though mature front trees can complicate scaffold on the older Park roads. You deal with one local roofer, not a chain of subcontractors.
Lead sheet is specified by code number: Code 3 (1.32mm), Code 4 (1.80mm), Code 5 (2.24mm). For chimney step flashings and soakers on Allestree domestic properties, Code 4 is the correct minimum specification. Code 3 is lighter and cheaper but has a significantly shorter service life — thermal movement in Allestree's winters works thin lead harder and accelerates fatigue cracking. We never use Code 3 for chimney flashing work. Code 5 is used for apron flashings and valley linings where greater width creates higher thermal stress. All lead work is carried out to BS EN 12588 specification.
A recurring finding on Allestree properties built before 1980 is mastic and silicone sealant applied over deteriorating lead flashings. The pattern is consistent: a previous roofer patches the failing lead with mastic as a temporary fix, the mastic lasts 3–5 years before hardening and cracking, the homeowner calls us with a recurrent leak, and we find the original lead failure still present beneath multiple mastic layers. We strip the mastic completely, assess the underlying lead, and either re-dress if the lead is salvageable or replace to the correct specification. We don't apply mastic over existing mastic.
Bay window flat roofs — a common feature on Allestree's Victorian and Edwardian terraces — are a frequent lead roofing job across the area. The original Code 6 lead on the oldest bay roofs has often lasted 80+ years and is still serviceable; where it has cracked or thinned from thermal fatigue it needs replacement rather than patching. Parapet capping on period properties in Allestree similarly requires Code 6 or Code 7 lead at the correct drip detail to prevent water running behind the coping and down the parapet face.
Chimney step flashings: £400–£900 | Valley lining replacement: £500–£1,200 | Bay window lead roof: £600–£1,500 | Parapet capping: £800–£2,000 | All work Code 4/5 lead to BS EN 12588
“Full ridge repoint on our Allestree detached — they found two loose valley tiles too while they were up there.”
“Moss treatment and mortar check. The difference in the roof appearance is remarkable.”
“Guttering cleared and fascia condition checked. Honest advice about what actually needed doing.”
If you're in Allestree and something's not right with the roof, it helps to know what you're looking at. Lead is the traditional weatherproofing for the vulnerable junctions of Derby's older roofs — flashings, valleys, bay and porch roofs, parapet gutters. When it fails, water gets into the most awkward parts of the roof. Homeowners around Blenheim Drive in Allestree tend to notice these first after a wet or windy spell.
Look out for signs like these:
When it is not the answer: If a flashing has simply lifted from the mortar and the lead is sound, re-dressing and re-pointing it is enough — full renewal would be oversell Read the full guide.
We assess the lead's code, condition and detailing — much failure is from wrong-code or over-long lead installed cheaply. In Allestree, scheduling also accounts for Derby City Council permit timescales where scaffold is needed.
A fixed price to renew in correct-code lead with traditional detailing.
Safe access is arranged for the leadwork.
Failed lead is stripped and renewed in correct-code lead — Code 4/5 for flashings and valleys — with welted joints and correct sizing for thermal movement.
We confirm the detail is weathertight and hand over the guarantee.
| Job | Typical duration |
|---|---|
| Renew a flashing | half a day |
| Lead valley renewal | 1–2 days |
| Bay/porch roof re-lead | 1–2 days |
| Parapet gutter re-line | 2–3 days |
| Heritage leadwork (complex) | 2–4 days |
Lead is dressed on site and needs workable conditions — heavy rain pauses the work. Access on tighter Allestree streets like Blenheim Drive can add a little to these times, which we flag upfront.
Leadwork needs safe standing time, so scaffold or a secure tower is arranged for most jobs beyond a simple flashing. Scaffold is specified for: valleys, bay roofs, parapet gutters and any leadwork needing sustained standing time - always itemised in your written quote, never a hidden extra, and we arrange it.
Allestree's larger 1930s–1960s detached and semi-detached homes generally have good driveway access for towers, though mature front trees can complicate scaffold on the older Park roads. Pavement scaffold and skip permits go through Derby City Council; allow a few working days on streets like Blenheim Drive, Birchover Way where space is tight.
| Job | Typical range | Notes |
|---|---|---|
| Renew a flashing | £250–£600 | Correct-code lead |
| Lead valley renewal | £600–£1,400 | Per valley |
| Bay/porch roof re-lead | £700–£1,600 | Per roof |
| Parapet gutter re-line | £1,000–£2,500 | Per scope |
| Heritage leadwork | Per spec | Conservation |
Worked example: Renewing a lead valley on a Victorian slate terrace in Peartree — around £950 including access.
Staged payment on larger leadwork, balance on completion. No large deposit. VAT included.
Covering DE22 and surrounding postcodes.
Leadwork carries a 10-year workmanship guarantee; correctly-installed lead to BS EN 12588 lasts 60–100 years, far outlasting the cheap alternatives it often replaces. We stand behind every Allestree job the same way, no exceptions.
If covered work ever fails, you call us and we sort it, at no further cost.
Questions about your roof? Call us free on 0133 240 5131 — no call-out fee, no obligation.
Contained work at the roof junctions, some access scaffold, and minimal disruption inside — most leadwork is invisible from the ground once done. You do not need to stay home for external work - we just need power and access agreed in advance.
Lead can be worked in most conditions but is dressed and detailed best in the dry; correctly-sized lead with expansion joints handles Derby's temperature swings without splitting. Allestree's elevated ground north of the city catches more wind, and the heavy tree canopy near Allestree Park sheds leaves that block gutters and grow moss on shaded slopes.
Chimney step flashings cost £400–£900 depending on stack size and complexity. Valley lining replacement costs £500–£1,200. Bay window lead roofs cost £600–£1,500. All prices include Code 4 or Code 5 lead to correct specification.
A correctly specified Code 4 lead installation has a design life of 60–80 years in Allestree's climate. Original Victorian lead on period properties is often still serviceable after 100+ years if it hasn't been damaged.
Lead flashings often fail at concealed junctions — where the step flashing meets the soaker, or where the apron meets the wall. The visual surface can look intact while the critical junction has opened. We inspect from working height, not from the ground.
Yes — if the lead is structurally sound (not cracked through, not thinned below 1mm) it can be re-dressed to restore the correct profile at abutments. Where the lead has fatigued through thermal cycling and cracked, replacement is necessary.
Lead is the required specification for all conservation area properties in Allestree and the correct material for listed buildings. Lead-alternative products are not accepted in conservation areas. We work regularly on period and conservation area properties across Allestree.
Code 4 (1.80mm thick) is the minimum specification for chimney step flashings and soakers. Code 5 (2.24mm) is used for apron flashings, valley linings and bay window roofs where greater width creates higher thermal stress. We specify the correct code for each application.
Yes — we strip all existing mastic, assess the underlying lead condition, and either re-dress or replace to the correct specification. Applying further mastic over existing mastic is not a repair we carry out.
No call-out fee. Fixed price. 10-year guarantee on all work.