Lead roofing specialists in Cosham. Cosham's position at the top of Portsea Island reduces direct coastal salt exposure slightly compared to seafront areas. Code 4 is acceptable on sheltered positions; code 5 on exposed elevations. Correct code specified for Cosham's exposure conditions on every job.
Salt air in the Portsmouth area reduces lead life compared to inland conditions. We specify the correct lead code for Cosham exposure positions including heavier code on harbour-facing and seafront elevations.
Chimney flashings and back gutters. Valley lead. Bay roof lead coverings. Dormer flashings. Parapet lead. Lead soakers. Heritage lead work on Cosham conservation area properties.
Lead failure in Cosham often presents as interior staining rather than visible exterior damage. We survey the full lead installation not just the area above the visible stain.
Cosham's position at the top of Portsea Island reduces direct coastal salt exposure slightly compared to seafront areas. Code 4 is acceptable on sheltered positions; code 5 on exposed elevations. We specify marine-grade lead code on all Cosham lead work — one code heavier than the standard inland specification on harbour-facing or seafront elevations. The cost difference is modest; the life expectancy difference in salt air is 15 to 20 years.
Chimney flashings and back gutters. Valley lead. Bay roof lead coverings. Dormer flashings. Parapet lead. Lead soakers between slates and tiles. We carry out heritage lead work on Cosham conservation area properties using traditional methods — roll welding, bossing and dressed lead.
Lead failure in Cosham often presents as staining on interior ceilings or walls rather than visible exterior damage — the leak path can travel a long distance from the actual failure point. We survey the full lead installation, not just the area above the stain.
| Service | Cost Guide | Notes |
|---|---|---|
| Chimney flashing replacement | £400–£800 | Correct code for exposure |
| Valley lead (per metre) | £180–£280 | Strip, dress and re-lay |
| Bay roof lead covering | £600–£1,400 | Full bay assessed |
| Dormer flashing | £300–£600 | Full perimeter |
"1930s semi on Drayton Lane — re-roof the second time for this property. Portsmouth Roofing was honest that the tiles were past repair and specified the right modern equivalent. No pressure, good advice."
"Nail sickness on our post-war Cosham property. Both main slopes assessed and re-fixed with stainless. Explained exactly what nail sickness means and what to watch for."
"Flat roof on our 1970s rear extension — GRP in a day. They matched the upstand height to the existing brickwork exactly. Neat finish."
Yes — Cosham is within our core service area. Call 0239 307 1334 for availability and free quote.
Yes — free, no-obligation survey and written quote before any work starts. No call-out fee.
Yes. NFRC registration, full public liability insurance and 10-year written guarantee on all work.
Most jobs are surveyed within 48 hours and started within 1–2 weeks. Emergency work is available same day — call 0239 307 1334.
Salt air from the northern approach to Portsea Island corrodes lead faster than inland. We specify one code heavier on exposed positions — the additional cost is modest against the longer replacement interval.
Correctly specified and installed lead should last 60+ years inland. In Cosham's conditions, expect 40–55 years on sheltered positions and 30–40 years on directly exposed elevations with standard code. Heavier code extends these intervals.
Yes — we carry out traditional lead work using bossing and roll welding techniques required for heritage properties. We are familiar with the material requirements for Cosham conservation areas.
No call-out fees. No obligation. Local Portsmouth roofers covering this area.
0239 307 1334