Roofing
Across
South London
Roof repairs, full replacements, flat roofs, guttering and chimney work — carried out properly by an experienced team that won't leave you with a temporary fix and a return visit you're still waiting on.
Roof leak or storm damage? We offer priority response across South London.
Call us now: 020 8226 0221Proudly Serving South London
Repairs to Full Replacements
Free Roof Surveys
Your Roof is
Your First Line of Defence
A failing roof doesn't just let in water — it damages ceilings, walls, insulation, and electrics, and the longer it's left, the more expensive the consequences become. Most roofing problems in South London's Victorian and Edwardian housing stock are predictable and preventable — slipped slates, failed flashing, blocked gutters, and deteriorating flat roof membranes are all issues we see regularly and deal with efficiently.
At Kelmend Construction, we carry out all roofing work — from a single slipped tile to a full roof replacement — with the same attention to detail we bring to every other part of a building project. We don't patch over problems and hope they hold. We identify the root cause, fix it properly, and leave you with a roof that performs.
Roofing
Services
Roof Repairs
Slipped or broken slates and tiles, failed lead flashing, leaking valleys, cracked ridge tiles, and failed mortar pointing are the most common roofing issues across South London. We carry out targeted repairs that actually solve the problem — not temporary patches that need revisiting in six months. All repair work is inspected thoroughly before we close the job.
Roof Replacement
When a roof has reached the end of its serviceable life — typically after 50–70 years for a tiled roof — repair work becomes uneconomical. We carry out full roof strip and replacement, including new battens, felt underlay, and tiles or slates to match your existing property or upgrade to a longer-lasting specification. All work is covered by building regulations notification where required.
Flat Roofing
Flat roofs on extensions, garage roofs, and outbuildings require specialist systems — not cheap felt that fails within years. We install EPDM rubber roofing and fibreglass (GRP) systems, both of which offer 20–25 year performance lifespans with minimal maintenance. We also repair and overlay existing flat roofs where the structure is sound.
Lead Flashing & Pointing
Failed lead flashing around chimneys, dormer windows, and roof abutments is one of the most common causes of roof leaks. We cut out failed flashing, dress new lead correctly, and repoint with appropriate mortar — not silicone sealant, which is a temporary fix that contractors use when they don't want to do the job properly.
Guttering & Fascias
Blocked, broken, or poorly aligned gutters are responsible for more damp problems in South London homes than most people realise. We replace guttering, downpipes, fascias, and soffits — removing old cast iron or uPVC systems and fitting new ones correctly aligned, properly jointed, and with appropriate falls to drain water away effectively.
Chimney Repairs
Chimney stacks take more weather exposure than any other part of a building. Crumbling mortar joints (repointing), failed lead flashing, cracked pots, and unstable stacks are all issues we address — from ground level with binoculars at the survey stage to scaffold level for the repair. We also carry out chimney removals and rebuilds where required.
Everything
We Cover
From a single tile to a full roof system — here's the complete range of roofing work we carry out across South London.
What Makes Us
Different
Honest Roof Surveys
We inspect your roof thoroughly and tell you exactly what we find — including what needs doing now, what can wait, and what doesn't need doing at all. We don't inflate the scope of work to increase the invoice, and we won't tell you a roof needs replacing when a targeted repair will do the job.
Root Cause Repairs
Most repeat roofing problems exist because the original repair addressed the symptom rather than the cause. A persistent leak isn't always where the water enters — it's often where it travels to. We trace problems properly before we repair them, so the fix actually lasts.
Proper Materials, Properly Applied
We use lead flashing, not silicone. We use quality roofing felt and correct batten gauges. We use the right mortar for repointing, not a standard mix that washes out in two winters. Materials matter — and so does how they're applied. We don't cut corners on either.
Fully Insured
All our roofing work is carried out under full public liability insurance. We're happy to provide proof of insurance before any contract is signed. Don't let any roofing contractor on your roof without confirming they're properly insured first.
Part of a Bigger Picture
If you're having a loft conversion, extension, or renovation, your roof is part of the project. We manage roofing as an integrated part of building work — so you're not coordinating a separate roofer alongside a main contractor, with the gap between the two being where problems hide.
South London Experience
Victorian slated roofs, Edwardian clay tiles, post-war concrete interlocking tiles, and flat-roofed 1960s extensions — South London has a wide variety of roof types. We've worked across all of them and understand the specific failure modes and correct repair approaches for each.
Our Roofing
Process
Free Roof Survey
We carry out a thorough inspection — checking the roof covering, ridge, valleys, hips, flashing, gutters, fascias, and chimney where applicable. We photograph everything we find and present our findings clearly, with a honest assessment of what needs attention now versus what can be monitored.
Clear, Itemised Quote
You receive a written quote covering exactly what work we're proposing, the materials we'll use, and the cost. For larger jobs we break this down by element so you can prioritise if needed. No vague "roofing works" line items — everything is specified.
Scaffolding Where Required
Safe access is non-negotiable. For any work above the eaves line we erect proper scaffolding — not ladders propped against gutters. This protects our team, protects your property, and means the work can be done properly rather than rushed from an unsafe position.
The Work
We carry out all agreed works to the specified standard. You're kept informed throughout — if we open up a repair and find something additional that needs addressing, we contact you immediately with photos and a cost before proceeding. No surprises on the invoice.
Inspection & Sign-Off
Before scaffolding comes down we carry out a final inspection of all work from scaffold level. Any outstanding items are resolved while we still have safe access — not from the ground with a pair of binoculars. We hand over with photos of the completed work and a clear record of what was done.
Covering
South London
We carry out roofing work across South London. Our core patch includes:
Not listed? We cover all of South London and can travel further across the city — just get in touch.
Roofing FAQs
How much does a roof repair cost in South London?
Minor repairs — a slipped slate, repointing a ridge, or re-dressing a small area of flashing — typically cost between £150 and £600 depending on the extent of the work and whether scaffolding is required. More significant repairs involving multiple areas or large sections of flashing will cost more. A full roof replacement on a 3-bedroom terraced house in South London typically ranges from £5,000 to £12,000 depending on size, roof type, and specification. We'll give you an accurate quote after surveying the roof.
How do I know if my roof needs repairing or replacing?
Signs your roof needs attention include: water stains on ceilings or walls, missing or slipped slates or tiles visible from the street, daylight visible in the loft space, sagging or uneven roof lines, moss or lichen growth on the roof surface, and gutters overflowing despite being clear. The honest answer is that you need a proper inspection to know which category you're in — that's why we offer free surveys. A roof in otherwise good condition with isolated failed tiles is a repair job; a roof where the felt has failed and tiles are broadly deteriorated is a replacement job.
What is the best flat roof system?
For most residential flat roofs in South London, we recommend either EPDM rubber or fibreglass (GRP). Both offer 20–25 year performance lifespans compared to 10–15 years for traditional felt. EPDM is highly flexible, handles temperature changes well, and is excellent for larger or more complex roof shapes. GRP is extremely hard-wearing and gives a clean, rigid finish — ideal for extensions and garage roofs. We'll recommend the right system for your specific roof at the survey stage.
My roof is leaking — how quickly can you respond?
We offer priority response for active roof leaks across South London. Call us directly on 020 8226 0221 and we'll aim to get someone to you as quickly as possible. In cases where a permanent repair can't be carried out immediately — due to weather conditions or material availability — we'll make the roof temporarily watertight and return to complete the permanent repair at the earliest opportunity. We won't leave you with a bucket under a leak.
Do I need scaffolding for a roof repair?
For most work above eaves level, yes — and any contractor who says otherwise should be questioned. Working from ladders on a roof is unsafe for the operatives and often means the work can't be done properly. Scaffolding adds cost but it's a non-negotiable part of doing roofing work correctly and safely. For single storey flat roofs accessible from a ladder, scaffolding may not be required — we'll confirm this at the survey stage.
How long does a full roof replacement take?
A full roof replacement on a typical 3–4 bedroom South London terraced house takes 3 to 7 days on site, depending on the size of the roof and the complexity of any hips, valleys, or chimney stacks. Scaffolding erection and striking adds a day either side. We work efficiently but don't rush — the roof needs to be left watertight at the end of every working day, and we plan the programme accordingly.
Roof Problem?
Let's Fix It.
Book a free roof survey and we'll tell you exactly what's going on — and what it will cost to sort it.
No pushy sales. No call centres. Just a straight conversation about your roof.