A leaking roof rarely fixes itself, and the longer water gets in, the more it costs to put right. Most small roof leak repairs in the UK fall somewhere between £150 and £600, but the honest answer is that it depends on what is causing the leak and how easy it is to reach. Here is what typically drives the price, based on the jobs we see day in, day out around Shirley, Croydon and the wider South East London area.
No two roofs are identical, so treat these as realistic ballparks rather than quotes. A straightforward repair, such as refitting or replacing a handful of slipped or cracked tiles, usually comes in at around £150 to £350. Repointing a ridge or resetting a few ridge tiles tends to sit between £200 and £500 depending on how much mortar work is needed.
Flashing is a common culprit on the Victorian and 1930s terraces and semis we work on locally. Repairing or renewing lead flashing around a chimney typically costs £200 to £600, while a full chimney reflashing with new lead can be £500 to £1,000. Patch repairs to felt or EPDM flat roofs, common on garages, dormers and rear additions, often run £150 to £450, though if the deck beneath is rotten the job becomes a partial or full replacement and the price changes significantly.
Access is the biggest variable. A leak over a single storey extension that can be reached from a ladder is quick to sort. A leak near the ridge of a three storey Victorian terrace may need scaffolding or a tower, which alone can add £300 to £800 or more. That is not a roofer padding the bill; working at height safely is a legal requirement and it protects you as well as the tradesperson.
Materials matter too. Concrete tiles are cheap and easy to source, while matching old clay tiles or natural slate on a period property takes more time and costs more per unit. Lead work is priced partly on the weight of lead used, and lead prices have risen noticeably in recent years. Finally, hidden damage changes everything: if water has been getting in for months, you may also be looking at rotten battens, soaked insulation or damaged plasterboard ceilings, which is why fixing a leak early is nearly always the cheaper option.
If your roof is otherwise sound and the leak comes from one identifiable fault, a repair is almost always the right choice. Where we advise caution is when a roof is showing widespread problems: multiple slipped tiles across different slopes, crumbling mortar along ridges and verges, or underfelt that tears at a touch. Paying £300 every few months to chase leaks around a tired roof adds up quickly.
As a rough rule, if repair costs over two or three years look likely to exceed a quarter of the cost of a new covering, it is worth getting a price for replacement so you can compare properly. A full reroof on a typical London terrace or semi generally runs from around £5,000 to £12,000 depending on size and materials. A decent roofer should be happy to talk you through both options rather than pushing you towards the bigger job.
Roofing attracts more than its share of rogue traders, particularly after storms. Be wary of anyone who knocks on your door claiming to have spotted a problem from the street, demands a large cash deposit, or quotes a price without properly inspecting the roof. Photos or video from the roof itself, which most reputable firms now take as standard, let you see exactly what is wrong before you agree to anything.
Get two or three written quotes that itemise labour, materials and any access equipment. Ask what guarantee comes with the work; even a small repair should carry a workmanship guarantee of at least twelve months, and lead or flat roof work often carries much longer. Local firms with a fixed address and a track record in your area have a reputation to protect, which counts for a lot when you need someone to come back.
Emergency call outs typically cost £100 to £250 on top of the repair itself, depending on the time and day. Often the first visit is a temporary fix, such as a tarpaulin or sealant patch, with the permanent repair priced separately once the roof is dry and properly inspected.
Usually only if the leak was caused by a sudden insured event such as storm damage, not by gradual wear and tear. Take photos of the damage inside and out as soon as you notice it, and check your policy before committing to work if you plan to claim.
As soon as you reasonably can. Even a small drip can rot timbers, ruin insulation and bring down a ceiling within months, turning a £200 repair into a job costing several thousand pounds.
Tell us about the job and we will get a quote back to you, most days the same day.