London Roof and Gutter Repairs Guide
31 October 2026 · 5 min read · How-To Guides
Quick answer
To get a roof or gutter repaired in London, find the source of the leak first, ask roofers to inspect and quote in writing, check whether scaffolding or access equipment is included, and confirm insurance. Small repairs rarely need permission, but larger changes or work in a conservation area may. Clear gutters before winter to prevent damp.
London's housing is old: Victorian terraces with slate roofs, Edwardian semis with clay tiles and post-war blocks with flat roofs. After a wet autumn, slipped slates, cracked flashing and blocked gutters show up as stains on ceilings and damp on walls. This guide explains how to find a roofer in London, what a fair quote looks like and when you might need permission for roof work.
How do I know if my London roof needs repair?
Signs that a London roof needs repair include slipped or cracked slates or tiles, damp patches on top-floor ceilings, water running down outside walls, moss blocking gutters, and daylight visible in the loft. Use binoculars from the street rather than climbing up. This Cottlink guide covers the checks to make.
- Inside: stains on ceilings, damp loft timbers or a musty smell upstairs.
- Outside: missing slates, cracked mortar on the ridge, sagging gutters.
- After rain: water spilling over gutters instead of down the pipe.
- Chimneys: loose flashing or crumbling pointing where the stack meets the roof.
What should a London roofer's quote include?
A London roofer's written quote should describe the work, materials, access method such as scaffolding or a cherry picker, waste removal, VAT, start date and expected duration, plus any guarantee on workmanship. Ask for photos of the problem from the roof. Cottlink recommends comparing two or three quotes for anything beyond a minor repair.
Scaffolding can be a large part of the cost on a terrace, and on a busy London street it may need a licence from the council for the pavement. Ask who arranges it and whether the price includes it.
Do I need permission for roof work in London?
Like-for-like repairs to a London roof usually do not need planning permission, but changes to its shape, materials or height may, and rules are stricter in conservation areas and for listed buildings. Ask the roofer and check with your council first. Cottlink suggests confirming this before work starts, not after.
The government's planning permission guidance explains when you need permission and how to check with your local planning authority. Replacing a whole roof may also involve building regulations, particularly for insulation.
How often should London gutters be cleared?
Most London homes benefit from clearing gutters at least once a year, usually in late autumn after the leaves fall, and more often under large trees. Blocked gutters overflow onto walls and cause damp inside. Many roofers and gutter cleaners offer this as a separate job; ask for photos before and after. Cottlink's tips in this guide can help.
If you live in a flat, the roof and gutters are often the freeholder's responsibility. Check your lease and report problems to the managing agent in writing.
Flat roofs and extensions
Many London homes have a flat roof over a rear extension or dormer. These often use felt, asphalt, rubber membranes or fibreglass, and each needs a different repair method. Ponding water, blisters or cracks are early warning signs. Ask the roofer which system you have and whether a patch repair will last or a replacement is better value. A reputable roofer will explain the options rather than insisting on the most expensive one.
Avoiding cold callers
Be wary of anyone who knocks on your door claiming to have noticed a problem with your roof, especially if they want to start that day or ask for cash upfront. Doorstep sellers are a common source of complaints. Choose a roofer yourself, get the quote in writing and pay in stages for larger jobs. You can find guidance on your rights in the government's consumer protection pages.
Damp after a roof leak
Once a leak is fixed, damp plaster can take weeks to dry. Keep rooms ventilated and warm, and avoid repainting until stains stop spreading. If a ceiling bulges or sags, keep clear and call a professional, because it may be holding water. Take photos for insurance, since many policies cover sudden storm damage but not gradual wear.
When water reaches lights or sockets
If a roof leak drips near a ceiling light, switch off the power to that circuit at the consumer unit and do not touch wet fittings. Once the roof is fixed, ask a registered electrician to check the circuit before you use it again. The London electrician hiring checks guide explains which schemes to look for and what an inspection should cover.
Water can also travel a long way inside a roof before it appears, so the stain on your ceiling may be some distance from the actual hole. A good roofer will trace the route rather than patching the first slate they find. Ask them to show you photos of what they found and what they fixed, and keep them with your invoice. If your boiler flue passes through the roof, mention it, because flashing around flues is a common source of leaks and any work near the flue may also need a Gas Safe engineer to check it afterwards.
Frequently asked questions
Can I claim roof repairs on insurance?
Storm damage is often covered; wear and tear usually is not. Check your policy.
Who repairs the roof in a block of flats?
Usually the freeholder or management company, as set out in your lease.
Is scaffolding always needed?
Not always. Some repairs can be done from ladders or access platforms. Ask the roofer.
Where can I find London roofers?
Roofers can list free on Cottlink with their areas and services.
Own a business here? Claim your free Cottlink listing. If you run a roofing or guttering business in London, a claimed listing lets you keep your services, hours and phone number accurate for local customers. Questions or corrections: listings@cottlink.com or call +254 704 625 414.
