Cosham is defined by its 1930s suburban housing stock — semis and detached properties spreading into Drayton and Farlington. The concrete interlocking tiles on these roofs are now 80 to 90 years old, well beyond their typical 60-year design life. Widespread nail sickness, surface erosion and cracked tile bodies are the result. We are the most experienced contractors for 1930s roof assessment and replacement across the Cosham area.
Full roofing service across Cosham — repairs, replacements, flat roofing, guttering and emergency call-outs. Free quotes.
Fast, honest repairs. Missing tiles, failed flashings — diagnosed and fixed properly with no call-out fees.
Learn more →Full re-roofs with 10-year guarantee. Itemised written quote before any work starts.
Learn more →GRP fibreglass, EPDM rubber and felt. Long-lasting coastal-grade systems for extensions and garages.
Learn more →Same-day emergency call-outs across Cosham. Storm damage and active leaks prioritised 24/7.
Call now →Lead valleys, chimney flashings and bay roofs. Coastal-grade specification for salt air environments.
Learn more →Cosham's inter-war housing dominates streets including Medina Road, Northern Road, and the estates spreading into Drayton. Concrete interlocking tile roofs that were state-of-the-art at construction are now approaching end of life. Original galvanised nails corrode progressively until failure — nail sickness — presenting as tiles that have slipped slightly or lift in wind.
The tile bodies themselves are also eroding: 90-year-old concrete surfaces lose their protective finish, become porous, and absorb moisture that accelerates freeze-thaw cracking. A visual inspection from ground level routinely underestimates the true extent of the problem.
Common roofing problems in Cosham: Nail sickness across the dominant 1930s concrete tile stock. Surface erosion and cracking on older tile bodies. Ridge and hip mortar failure — the same age as the roof itself on properties with no previous maintenance. Valley blockages from moss on north-facing slopes.
Local roofers covering Cosham and all of Portsmouth. Call for a free, no-obligation quote.
0239 307 1334Mon–Fri 8am–6pm · Sat 8am–2pm · 24/7 Emergency
"Had three roofers tell us our Cosham semi just needed a few tiles replacing. Portsmouth Roofing were the only ones who actually got up there and counted the nail sickness — 40% of the rear slope was affected. We did the full re-roof. Best decision we made."
"1930s detached in Drayton — full re-roof in modern clay to match the street character. Four days, garden left clean, guarantee paperwork the same week."
"Ridge mortar had failed completely across our Cosham semi. Portsmouth Roofing repointed the full ridge and re-bedded four loose tiles. Quoted clearly, came when they said, no call-out fee."
Signs include tiles that have slipped down the slope, tiles that lift slightly in wind without falling, or a course of tiles that have moved uniformly. We offer free assessments across Cosham.
If nail sickness is present on more than one slope, or tile bodies show widespread erosion and cracking, replacement is almost always better long-term value than piecemeal re-fixing.
A typical 3-bed semi in Cosham costs £7,000 to £10,000 including scaffold, breathable membrane and marine-grade fixings. Full itemised quote before any work starts.
Yes — all of Cosham, Drayton, Farlington and surrounding north Portsmouth areas.
All roofing services in Cosham including repairs, replacement, flat roofing, emergency, guttering, chimney, lead and Velux.
We aim to reach Cosham within 2 to 4 hours. Call 0239 307 1334.
All roofing services in Cosham and Drayton including 1930s tile assessment, nail sickness surveys, flat roofing and emergency call-outs.
No call-out fees. No obligation. Just an honest quote from a local Portsmouth roofer.
0239 307 1334