Greater London · London and the South East
Flat Roof Survey in Wandsworth
Find out what’s going on with the flat roof before you decide what to do next. Flat roof surveys in Wandsworth, with photos and a clear written report.
- Blistering in felt or asphalt
- Failed seals around rooflight kerbs
- Outlets that hold water back
Flat roof surveys for homes and businesses in Wandsworth
Buying a home with a flat-roofed extension, dormer or garage? It is useful to know that roof’s condition before you exchange. Felt roofs often last around 15 to 20 years, while EPDM and GRP often last longer. We set out the type of covering, its condition and the defects we found, with photos of each. You then have something specific to put to the seller or agent. We survey mastic asphalt, upstands and outlets and felt flat roofs, and the problems we are asked to look at most are pools of water lying on the roof and gaps at upstands and abutments.
On a London roof terrace or a flat roof over a back addition, water often runs under the covering before it shows. Upstands against parapets, outlets and the edge where flat meets pitched are common entry points. In a block or conversion in Wandsworth, the flat roof is often a shared part of the building.
The report records the flat roof as we found it on the day. That makes it useful now and a handy reference later.
- Location
- Wandsworth (SW18, SW15, SW11)
- Region
- Greater London
- Price
- From £150 inc. VAT
- Your report
- Emailed report with photos and recommendations
- Survey days
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Last updated
- 27 October 2026
How it works
We photograph the roof as we go, so you can see in the report what we found and where. We take close-ups from wherever is safe. Most surveys take an hour or two for an extension, garage or dormer roof, and around 3–4 hours for a commercial flat roof. London terraces rarely offer a view of the whole roof from one spot, so in Wandsworth we work round the house, using the street, the windows, the loft and any safe vantage point behind it. Shared stairs or a basement flat? Tell us who holds the keys.
- First we go through the roof, what’s beneath it and any problems so far.
- The roof is viewed from safe positions, including the roof itself where that’s safe.
- The covering is checked for wear, splits, blisters and standing water.
- We photograph and record the outlets, upstands, trims and rooflights.
- A written report with photos and recommendations is emailed to you.
Preparing for the visit
- Leave side gates unlocked
- For flats, check roof access has been agreed
- Gather any invoices or paperwork from past roof work
Arrange a survey
Getting a price is simple: just ring 07833 053749 or send us an email and give us a few details about the property and we’ll suggest the right survey. The price is agreed up front.
Related advice
What a flat roof survey does not cover
To be straight with you, a roof survey has limits:
- Fragile surfaces, which we don’t walk on
- Testing older roof sheets for asbestos
- A structural engineer’s assessment of the deck
Not sure which survey suits your roof? You can call 07833 053749 or email us and we’ll tell you before booking. The full list of what we check.
What this survey covers
- EPDM rubber
- GRP fibreglass
- Felt flat roofs
- Upstands and outlets
- Single-ply membranes
- Mastic asphalt
Flat roof surveys in Wandsworth: local notes
Inner London’s Victorian and Edwardian terraces often have Welsh slate roofs. A butterfly roof with a central valley gutter, tucked behind a parapet wall, is common on these houses. Shared chimney stacks, party-wall upstands and lead work come with this kind of house. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. Within a mile and a half or so of Wandsworth there are several hotels, and like offices and blocks, hotels frequently sit under flat roofs. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use.
Take a building like St Anne's CofE Primary School: large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly. For an older house near a landmark such as St Anne's Church, later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear.
Wandsworth is about 3 miles south-west of Brompton, in Greater London. From houses to flats and shops in Wandsworth, we can survey the roof. Wandsworth is one of the towns and villages in Greater London where we work.
Flat roof surveys in SW18, SW15 and SW11 are booked the same way as anywhere else. Whether your property is on Alma Road, Marl Road and Knoll Road or anywhere close by, we can help. Nearby, we also carry out flat roof surveys in Southfields (1 mile south), Earlsfield (1 mile south), Hurlingham (1 mile north), Clapham Junction (1 mile north-east) and Battersea (1 mile north-east). Larger places within reach include London (5 miles north-east), City of Westminster (4 miles north), Marylebone (5 miles north-east), Kensington (3 miles north), St Pancras (6 miles north-east) and Shoreditch (7 miles north-east).
Near you in Wandsworth
Locally, jobs take us to homes and businesses close to Ashcroft Technology Academy, Emanuel School and Spread Eagle pub, among other places. Wandsworth has its own railway station: Wandsworth Town station. A little further out are Southside Wandsworth (less than half a mile west) and Antique Breadboard Museum (1.4 miles north-west). For a walk, there is Battersea Park Lake and Henman Hill.
What affects the cost of flat roof surveys
The price reflects the time and kit the roof needs. That comes down to:
- The use of thermal imaging or a drone
- How many separate roofs there are, like extensions, dormers and garages
- The package you choose: Basic, Standard or Premium
- Roof area
A small, low roof with good viewpoints takes less time than a tall, complicated one, and the package matters as well. We’ll give you the figure before anything is booked.
Booking your survey
Here’s what helps us most when you get in touch:
- The property’s address and postcode
- What’s prompted the survey
- Access details, such as a loft hatch or a shared roof
- Where water is showing inside, if it is
Flat roof survey starts from £150, including VAT. The exact figure depends on the roof and the package, so ring 07833 053749 or email us with the details.
What we’re asked to look at in Wandsworth
A flat roof lies open to sun, rain and frost, and water drains off it slowly. Over the years, coverings harden, crack and start to come away at the edges. Most people book a survey after a leak, before buying, or when they think the roof is getting old.
Common reasons to book include:
- Gaps at upstands and abutments
- Cracked or split membrane
- Failed seals around rooflight kerbs
- Blisters and bubbles in the covering
If you run a business near Southside Wandsworth, flat roofs over shops and units are easy to forget until water comes through a ceiling.
Questions to ask before booking
- Whether the inside of the roof is included
- Is VAT included in the price?
- Are they insured for the work?
- Whether you can ask questions once you have the report
Wandsworth questions
Can parking be tricky for a visit in Wandsworth?
Sometimes, yes. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well, and a driveway is even better.
Does a conservation area affect roof work in Wandsworth?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
Is it a structural engineer’s report?
No. Visible signs like deflection or sagging are recorded, but we don’t provide calculations or an engineer’s opinion. The report will say if you need an engineer.
How long will you be at the property?
That depends on the size and shape of the roof, but most surveys take roughly 1–2 hours at a typical home, or half a day or so for a commercial building. The written report follows by email.
Does the survey cover asbestos?
Our survey doesn’t include asbestos testing. Older buildings, from before 2000, may have asbestos in cement sheets or soffits. Anything that might contain it is flagged, so a specialist asbestos surveyor can check before work starts.
Can you survey any kind of flat roof?
We cover the main flat roof coverings: felt, asphalt, EPDM, GRP and single-ply. The report names the covering and explains its condition.
Are you insured?
Our surveys are covered by professional indemnity and public liability insurance. Ask if you need details for a managing agent or building owner.
Useful tips for Wandsworth property owners
Over many surveys, some simple habits stand out:
- Treat rooflights and old sheeting as fragile
- Limit foot traffic on the covering
- Look for standing water a day after rain
- File the paperwork for the roof and any repairs
You can use the report to ask roofers to quote for the same work. Because everyone is pricing the same findings, the quotes are easier to compare. It is your choice who carries out the work and when.
Book a survey every few years, and again after new fixings, units or rooflights go in. That catches changes early and builds up a record of the roof.
Also near Wandsworth
Other services in Wandsworth
Landlords, agents and block managers in Wandsworth
An agent can book and manage the survey for a landlord, and the report can go to both. Access is agreed with the tenant in advance.
Roof problems in a rented home affect tenants as well as the building. A survey helps you spot issues early and plan the work with less disruption.