Property Restoration Services London Ltd are roofers in Clapham SW4, working on the mansard and rear-dormer loft conversions of the borough's tall Victorian terraces, the Georgian and early-Victorian roofs of Clapham Old Town, and the concealed valley gutters behind the parapets on the grid streets between the Common and Clapham High Street. Clapham is a core part of our South West London coverage, worked alongside Battersea, Brixton, Stockwell and Wandsworth. Most enquiries are seen within two working days, with emergency callout for storm damage and active leaks.
Property Restoration Services London Ltd is a roofing company based on Chiswick High Road covering Clapham SW4, including Old Town, Abbeville Village, Clapham Park, Clapham High Street and the streets around the Common that cross into SW11 and SW12. The team carries out roofing for mansard and rear-dormer loft conversions, concealed valley and parapet gutter repairs on the terraces, natural slate repairs in the Old Town conservation area, GRP and EPDM flat roofing, chimney repointing, and emergency callout. Clapham has one of the highest rates of loft conversion in south London, so a large part of our work is tying a new dormer or mansard roof into the existing Victorian slope without weak junctions. Standard repairs are assessed on site within two working days, and same day inspection is available for storm damage and active leaks. All roofing work carries a ten year insurance-backed guarantee, and the company holds public liability cover of 2 million pounds, rising to 5 million pounds for commercial and block work. Quotes follow a free, no obligation on site inspection. Call 020 3633 8101 to book.
Clapham has one of the highest concentrations of loft conversions anywhere in south London. The tall, double and single-fronted Victorian terraces around the Common, off Abbeville Road and between Clapham High Street and Wandsworth Road were mostly built with two full storeys and a plain slate roof, and decades of rising SW4 property prices have pushed most of them to add a third floor, usually a rear dormer or a full mansard behind the front parapet. Done well, the new structure ties cleanly into the old roof; done badly, the junction between the original slate slope and the new dormer cheeks and flat roof is exactly where water gets in, months or years after the build finished.
A few hundred yards away, Clapham Old Town is a different job entirely. It is one of Lambeth's strictest conservation areas, a cluster of Georgian and early-Victorian terraces around Old Town, The Pavement and Rectory Grove with consistent rooflines, slate roofs, brick parapets and, on many houses, original dormer windows that are decades older than the loft-conversion boom nearby. Work here has to match what is already there rather than what is quickest.
Between the two, the long Victorian terraces off Abbeville Road, Narbonne Avenue and Voltaire Road, and the parades above the shops on Clapham High Street, mostly have the concealed "butterfly" valley roof behind a front parapet that is common across inner south-west London: two shallow pitches meeting in a hidden valley gutter with a single outlet, prone to silting up and backing up under the parapet where it cannot be seen from the street. Clapham Common itself, and the streets on its south and west sides, sit across the boundary into the London Borough of Wandsworth, so we plan a Clapham job knowing which council's conservation rules and scaffold licensing apply before work starts.
From tying a new dormer into an existing Victorian slate roof to re-lining a concealed valley gutter on an Old Town terrace, we cover the full range of roofing work typical of SW4. Every job starts with an on site assessment before any quote is given.
New mansard and rear-dormer roofs on Clapham's Victorian terraces, tied cleanly into the existing slate slope with a proper flat-roof-to-pitch junction, not a mastic joint.
Repair and re-lining of the concealed "butterfly" valley gutters behind the parapets common on the Abbeville Road and Clapham High Street terraces.
GRP and EPDM rubber for rear extensions and loft dormers, and asphalt, felt and single-ply renewal on Clapham's converted-house and mansion-block roofs.
Repointing, flaunching, soakers and flashings on Clapham's shared terrace stacks, plus Code 4 to Code 6 lead to dormer cheeks, valleys and flats.
Same day callout for storm damage, slipped slates and overflowing valley gutters across SW4, with temporary weatherproofing until a full repair is scheduled.
Cast iron and aluminium rainwater goods, hopper heads and parapet outlets, plus clearance of leaf and grit build-up around the Common's mature plane trees.
Clapham has one of the highest rates of loft conversion in south London, and the roofing content of that job is often treated as an afterthought behind the joinery and the plastering. A mansard or a rear box dormer replaces a section of the original slate roof with a near-vertical front face, a shallow-pitched or flat top, and two cheeks, all of which have to be weathered and tied back into the roof slope that remains. Get the junction between old and new wrong and the leak often does not show for a year or two, once the flashing has had time to fail.
On a Clapham loft conversion roof we check the tie-in at the head of the new structure where it meets the retained slate slope, the lead or GRP to the dormer cheeks, the flat or shallow-pitch covering on top of the mansard or dormer itself, and the junction back down into any parapet or party wall. Where the roof already has a concealed valley gutter, a new dormer built close to it changes how much water that valley has to carry, so we check the outlet and the fall as part of the same survey. We also flag anything that will need building control sign-off or, on the busier terraces, a party wall agreement with the neighbour before work starts.
A short walk from the loft-conversion terraces, Clapham Old Town is a different job entirely. It is one of Lambeth's strictest conservation areas, taking in Old Town, The Pavement and Rectory Grove, with a consistent Georgian and early-Victorian streetscape: natural slate roofs, brick parapets, and on many houses original dormer windows that pre-date the modern loft-conversion boom by well over a century. Lambeth's neighbouring conservation areas at Abbeville Road, Clapham High Street and Clapham Park follow a similar principle even where the buildings are a little later.
Work in these conservation areas is like-for-like: matched natural slate rather than concrete tile, parapets and copings kept to their original profile, cast iron rainwater goods repaired rather than swapped for plastic, and any rooflight or dormer kept out of sight of the public highway where the guidance calls for it. Where a change would need consent, we set the scope out clearly so it can go to Lambeth Council (or the London Borough of Wandsworth on the SW11/SW12 fringe of the Common) before work starts, rather than finding out part way through a job.
Clapham's roofs run from Georgian and early-Victorian slate in Old Town to modern mansard and dormer loft conversions, long terraces and converted mansion blocks, and each needs a different covering. These are the systems we install and repair most often across SW4, and the property types they suit.
Not sure which applies to your roof? We confirm the right system during the free inspection, taking account of the roof structure, whether a loft conversion is already in place, and whether the street sits in one of Clapham's conservation areas.
Every job is priced after a free, no obligation on site inspection, since roofs in Clapham vary too much for a fixed price list to be meaningful. The main factors we take into account when pricing a job are set out below, so you know what to expect before you book an inspection.
We do not quote over the phone, since giving a figure before seeing the roof would not be accurate. Call 020 3633 8101 for a written quote after a free inspection, with no call out charge for the visit.
The process is the same whether the job is a single slipped slate in Old Town or a full mansard tie-in on a loft conversion, so you know what to expect before we arrive.
Reach us by phone or through the contact form with your postcode and a description of the issue.
We survey the whole roof, including any dormer or mansard tie-in, valley gutters and chimney stacks, and provide a clear quote before any work begins.
Our roofer completes the agreed work, matching slate, lead and mortar to the existing roof where the job is a repair.
You receive a written summary of the work completed along with any maintenance advice, such as when a valley outlet is next due for clearance.
Sprayed polyurethane foam under the slates turns up regularly across SW4, often applied to the underside of a retained slope during an earlier loft conversion as a quick way to warm the new room. Since 2023 most mortgage lenders and RICS surveyors record it as a defect, because the foam hides the rafters and can hold moisture against the timber, and a sale or remortgage on a Clapham flat or house stalls until it is dealt with.
We strip open-cell and closed-cell foam off pitched roofs across Clapham by hand, working the bonded felt and any softened battens off with it, and leave the rafters clear for a surveyor to sign off. Sound slate is re-used. Where the foam has fused to the back of the slate and will not come away in one piece, we set out a re-slate cost alongside the strip-out so the roof is opened up, cleared and re-covered on a single scaffold.
A large share of Clapham's housing stock is Victorian houses split into two or three flats, plus mansion blocks around the Common and along Clapham High Street. For freeholders, managing agents and residents' management companies we cost flat roof renewal, valley and parapet gutter work, and loft-conversion roof tie-ins, put the specification into a form that carries a Section 20 leaseholder consultation where the value crosses the threshold, and will sit in on a directors' or residents' meeting to talk leaseholders through the options and disruption.
The photographs below show completed roofing work by our team on the property types found across Clapham and SW4: loft-conversion tie-ins, valley gutters, slate roofs, chimney stacks and flat roofs.
As roofers in Clapham SW4, we work from Chiswick High Road, and Clapham is a core part of our South West London coverage, worked on the same round as Battersea, Brixton and Stockwell, and alongside Wandsworth next door.
Our roofers are directly employed, not subcontracted, so the team that quotes your Clapham job carries it out. We are used to both ends of SW4's roof stock, from the Georgian terraces of Old Town to the mansard and rear-dormer loft conversions that make up so much of the borough's housing, and we plan scaffold licences and parking suspensions with the correct council, Lambeth or Wandsworth depending on which side of the Common, as part of the job. Read more about the team on our about us page.
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Across our South West and West London roofing work we are rated 5.0 out of 5 from 71 Google reviews. Read the verified reviews on our Google Business Profile ›
Clapham is a core part of our South West London round, worked alongside Battersea, Brixton and Stockwell, and we are adding area-tagged reviews for SW4 as jobs complete. The points customers raise most often are that the quote matched the final invoice, the whole roof was surveyed rather than just the reported leak, and the scaffold and the street were left tidy.
We cover every part of Clapham and the wider SW4 postcode. Our roofers work directly for Property Restoration Services, we are not a franchise or a booking platform passing your job to a third party roofer.
Property Restoration Services London Ltd covers Clapham within SW4, alongside Battersea, Brixton, Stockwell and Wandsworth nearby, and the fringe of Clapham Common that sits in SW11 and SW12. We aim to carry out an on site assessment within two working days for standard repairs, and offer emergency callout for storm damage and active leaks. Every SW4 postcode is covered, including Old Town, Abbeville Village, Clapham Park and the streets around Clapham High Street, and we are used to coordinating access with multiple flat owners in the same converted terrace, which is common across Clapham's housing stock. Quotes are provided after inspection, with no call out charge for the initial visit.
Alongside Clapham we cover the following nearby areas.
Content last reviewed: September 2026.
The questions below cover what Clapham customers ask us most often.
We aim to carry out an on site assessment within two working days for standard repairs across Clapham and the rest of SW4. For storm damage or an active leak we offer emergency callout and try to attend the same day. Clapham is a core part of our South West London round, worked alongside Battersea, Brixton and Stockwell, so it is planned for rather than treated as an outlying area. Once we have inspected the roof we confirm a schedule for any follow up work, so you know when the job will be finished.
We cover every street in Clapham and the full SW4 postcode, from Old Town, The Pavement and Rectory Grove to Abbeville Village, Clapham High Street and Clapham Park. We also cover the streets around Clapham Common that cross into SW11 and SW12 in the London Borough of Wandsworth, and Battersea, Brixton, Stockwell and Wandsworth nearby, so a job near a postcode or borough boundary is not a problem. Our roofers travel out to SW4 for every job, we do not subcontract Clapham work to a third party roofer working under our name.
A mansard or rear-dormer loft conversion replaces part of the original slate roof with a new structure that has to be tied back into what remains. The leak usually starts at that junction: the flashing where the dormer cheek meets the old slope, the felt or membrane on the flat top of the dormer or mansard itself, or a concealed valley gutter that now has to carry more water than it was designed for because of the new roof shape above it. Water can travel along the timbers before it shows on a ceiling, sometimes well away from the fault, which is why we survey the whole roof, not just the room under the stain, before quoting.
We do not publish a fixed price list, because roofs in Clapham vary too much for a general figure to be meaningful or fair. See our cost factors guide above for what affects the price. Every job is priced after a free, no obligation on site inspection, and you receive a written quote before any work begins, with no call out charge for the inspection visit.
Yes. Lambeth Council has several conservation areas covering Clapham, including Clapham/Old Town, Rectory Grove, Clapham Park and Northbourne Road, Clapham High Street and Abbeville Road. On those streets we work to like-for-like repair: matched natural slate rather than concrete tile, parapets and copings kept to their original profile, and cast iron rainwater goods repaired rather than replaced with plastic. Where a change needs consent, including many rooflights or dormers visible from the street, we prepare the scope so it can go to Lambeth Council (or the London Borough of Wandsworth on the Common's SW11/SW12 fringe) before work starts.
We carry out a free, no obligation inspection before providing a quote. On a straightforward terrace repair that is a short visit; where a loft conversion is involved it means checking the tie-in at the dormer or mansard, the covering on top of it, and the condition of the roof either side, because that is where the faults usually are. Once you accept the quote we schedule the work and confirm a date. There is no call out charge for the initial inspection visit anywhere within SW4, whether the job is a single slipped slate or a full valley re-line.
Once you accept a quote we agree a date and confirm what access is needed. On the terraced streets that often means a scaffold with a licence and, on a controlled-parking street, a bay suspension, which we arrange with Lambeth or Wandsworth before we start. Our roofer carries out the agreed work and, on a repair, matches the new slate, lead and mortar to what is already on the roof. On dormer, valley and chimney work we check the full assembly for other weak points as standard. Once finished you receive a written summary of what was done and any maintenance advice.
Many rear-dormer loft conversions can be carried out under permitted development, but a mansard that changes the roof shape, anything visible from the street, or work on a property in one of Clapham's conservation areas is more likely to need planning permission, and on a flat or maisonette you will usually also need the freeholder's permission regardless of planning. We flag anything that may need consent during the inspection so you can check with Lambeth Council (or LB Wandsworth on the Common's fringe) before proceeding, rather than assuming a straightforward job and finding out otherwise once work has started.
In most cases, yes. We take up the slates either side of the new structure back to a sound point, lead or GRP flash the dormer cheeks and head into that opening, and re-lay the retained slates to match. A full re-roof is only needed where the existing slate has already failed elsewhere or where the roof timbers themselves need attention, which we would flag during the survey rather than after the scaffold is up.
Yes. It turns up regularly on SW4 terrace loft conversions where foam was sprayed onto the underside of the retained slope, and it tends to stall a sale or a remortgage because surveyors and lenders record sprayed foam as a defect. We hand strip open-cell and closed-cell foam off the rafters and slate backs, lift out any felt and battens that come away with it, and leave the roof space open for a surveyor to inspect, with a written record for the lender. If the foam has fused to the back of the slate we quote the re-slate alongside the strip-out so it is one scaffold and one visit.
Isolated slate or ridge repairs on a terrace can often be done from a roof ladder or a tower. Valley, parapet, dormer and chimney work, and almost any job that touches a loft conversion roof, needs a scaffold for safe access. On controlled-parking streets that also means a bay suspension arranged with the correct council before we start. We plan the scaffold to be up for the shortest time possible and check rear access and neighbour agreements where it has to bridge two properties.
Yes. Between the mansion blocks around the Common, converted-villa flats across SW4 and the buildings along Clapham High Street, a lot of our Clapham work is communal. We write the specification and costings so they carry a Section 20 leaseholder consultation, produce condition reports and reserve-fund figures for forward planning, and will attend a directors' or residents' meeting. Flat roof renewal and rolling maintenance on communal and converted-house roofs are routine for us across the borough.
Yes, this is one of the most common jobs on Clapham's Victorian terraces, particularly around Abbeville Road and Clapham High Street. Where two shallow pitches meet behind a front parapet, the hidden valley lining fatigues at the laps and the single outlet silts up, and because it cannot be seen from the street the fault often goes unnoticed until it backs up. We lift the slates either side of the valley, strip the old lining back to the boards, check for rot, and re-line in Code 5 lead or GRP with a properly checked outlet and fall.
Yes. We inspect roofs for buyers before exchange and for owners scoping a loft conversion who need to know what the existing roof is like before the drawings are done. The survey covers the slate condition, any existing dormer or valley, the chimney stacks and, on a house already split into flats, which parts of the roof are shared. A written report follows, which is useful evidence for a buyer negotiating or for an architect planning the roofing element of a loft conversion.
Responsibility for a shared roof over a converted house is usually set out in the lease, often with the top-floor flat responsible for its own ceiling and ceiling void and the freeholder or a residents' management company responsible for the main roof structure, but this differs from building to building and we cannot confirm it without seeing the lease. We identify exactly where the fault sits during the inspection, which is useful if a conversation with the freeholder, managing agent or another leaseholder is needed before work can proceed.