Greater London · London and the South East
Grange Mills Flat Roof Survey
Find out the condition of the flat roof at your property in Grange Mills. Visits run on weekdays and weekends, in the daytime.
- Gaps at upstands and abutments
- Pools of water lying on the roof
- Blisters and bubbles in the covering
Flat roof surveys for homes and businesses in Grange Mills
Buying a home with a flat-roofed extension, dormer or garage? It is useful to know that roof’s condition before you exchange. Many felt roofs need renewing after around 15 to 20 years, and EPDM and GRP often go on for longer. We set out the type of covering, its condition and the defects we found, with a photo of every defect. You then have something specific to put to the seller or agent. Common reasons to book are loose or cracked edge trims and raised blisters across the surface, across mastic asphalt, EPDM rubber and felt flat roofs.
London has a lot of flat roofs: rear additions, dormers, roof terraces and the roofs of blocks and offices. Coverings range from felt and asphalt to EPDM rubber, GRP fibreglass and single-ply membranes, and each fails in its own way. Which one is on a roof in Grange Mills shapes how it’s checked. Many older flat roofs are felt or asphalt, and many newer ones EPDM rubber or GRP.
Report times depend on the survey you book: the Basic Survey within 48 hours, the Standard Survey in 24 to 48 hours and the Premium Survey on the same day.
- Where
- Grange Mills (SW12, SW4, SW2)
- Region
- Greater London
- Price
- From £150 inc. VAT
- Reports
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Insured
- Professional indemnity and public liability
- Phone
- 07833 053749
- Page updated
- 27 October 2026
What affects the price in Grange Mills
Not every roof costs the same to survey, for these reasons:
- If the survey needs thermal imaging or a drone
- The package you choose: Basic, Standard or Premium
- Extensions, dormers and garages with roofs of their own
- The roof’s overall size
We offer three survey packages: Basic from £150, Standard from £250 and Premium from £400, all inc. VAT. What your roof costs depends on its size, access and what you want to find out.
Booking your survey
There’s no need for technical words. Just tell us:
- How the loft is reached, if there is one
- Any deadline, such as an exchange date
- Where the property is, with the postcode
- Pictures from the garden or a window, if you have them
Our phone lines are open seven days a week, including Saturdays and Sundays. For a price or to book, ring 07833 053749 or use the contact form.
Can I check my roof myself?
It helps to keep a record: dates of leaks, photos from the ground and any work done on the roof. Send it with your enquiry.
The one thing to avoid is getting up close. Roofs are fragile and slippery, and a fall can be serious. That is where a survey comes in, using safe viewpoints and a drone where it applies.
Also near Grange Mills
What else we do in Grange Mills
Common questions in Grange Mills
How do I find out if my home in Grange Mills is listed?
Start with Historic England’s list for listing and your council for conservation areas. Either can affect what roof work is allowed, so it is worth checking before planning any.
Do you cover Grange Mills?
We do. The survey and report are the same in Grange Mills as anywhere else.
When does the report arrive?
Basic reports arrive within 48 hours, Standard reports in 24–48 hours and Premium reports on the same day. All of them come by email.
Can you survey a flat roof on an office or unit?
Yes. We survey flat roofs on commercial buildings as well as homes. Expect about 3 to 4 hours on site for most commercial roofs, and larger roofs are quoted for their size.
Do you carry out surveys on Saturdays and Sundays?
We survey seven days a week: weekdays, Saturdays and Sundays. Just tell us the days that suit you.
How long is the visit?
Expect it to take between one and two hours for an extension, garage or dormer roof, and around 3–4 hours for a commercial flat roof. You’ll then get the report by email.
Will you photograph what you find?
Yes. Photographs are part of every report.
Flat roof surveys in Grange Mills: local notes
Close to the centre of London, a great many houses are Victorian or Edwardian terraces, many of them roofed in Welsh slate. From the street you may see only a parapet, with a butterfly roof and a valley gutter behind it draining to the back. Shared chimney stacks, party-wall upstands and lead work come with this kind of house. Next to the main roofs there’s typically a flat roof somewhere, whether on an extension, a garage or a commercial unit. Kingswood House, about 2.9 miles east, is one of the historic houses in the wider area around Grange Mills. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and any change of roofing material on a listed home needs checking with the council first.
For landlords with property near Balham station, a flat roof over a rented flat is easy to forget until the tenant reports a leak. If you run a business near Southside Wandsworth, flat roofs over shops and units are easy to forget until water comes through a ceiling. If you look after a building such as Henry Cavendish Primary School, schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks.
Grange Mills is about 2 miles south-west of Stockwell, in Greater London. In Grange Mills, as across Greater London, every roof gets the same careful survey. Grange Mills is one of the places in Greater London where we work.
Postcode districts we cover here for flat roof surveys: SW12, SW4 and SW2. You’ll find streets like Lynn Road, Weir Road and Byrne Road. Neighbouring places we cover for flat roof surveys include Hyde farm estate (1 mile south-east), Balham (1 mile south-west), Clapham Park (1 mile north-east), Streatham Hill (1 mile east) and Streatham Park (1 mile south). Further out, we also cover London (4 miles north-east), City of Westminster (5 miles north), Marylebone (5 miles north), Kensington (5 miles north-west), St Pancras (6 miles north) and Shoreditch (6 miles north-east).
Near you in Grange Mills
Typical jobs here are in homes near The Bedford pub, Waldorf School of South West London and La Retraite Roman Catholic Girls' School and the streets around them. Grange Mills has its own railway station: Balham station. Nearby you’ll also find London Sewing Machine Museum (0.9 miles south-west) and St James' Hospital (0.9 miles west). For a walk, there’s Knight's Hill and Battersea Park Lake.
What we cannot see
A survey is a careful look at the flat roof, but it cannot do everything. Its limits include:
- What’s under the membrane without opening it up
- Whether the deck or joists are strong enough
- Testing older roof sheets for asbestos
If you are not sure which survey you need, phone 07833 053749 or send us an email and we’ll give you a straight answer before you book. What our survey covers.
Roofs we survey in Grange Mills
- EPDM rubber
- Mastic asphalt
- Single-ply membranes
- GRP fibreglass
- Felt flat roofs
- Upstands and outlets
Why it is worth a survey now in Grange Mills
A leak over an office, shop or unit can affect the people and stock underneath. A planned survey lets you budget for work rather than deal with an emergency around the business. London’s older roofs frequently have bitumen felt underlay or none at all, so a slipped slate can soon mean water inside. Left unchecked, water soaks into timber and plaster and the damage spreads.
Simple, low roofs take less time to survey than tall or complicated ones, and the package matters as well. The price is always agreed first.
Why book with us
- Over 5,000 surveys carried out
- Every finding written up with photos
- Satisfaction rate of 98%
- CAA-registered drone operator (Flyer ID and Operator ID)
Take a look at what a roof survey costs and our case studies.
Tips from our surveys
Getting the most from a flat roof survey starts before we arrive and carries on afterwards. Tips:
- File the paperwork for the roof and any repairs
- Plan a survey before the covering reaches the end of its usual life
- Check that new brackets or units haven’t damaged the covering
- Keep outlets clear of leaves and moss
Once we’ve been, the findings are written up with photos. It covers the type of covering, its condition and each defect, with our recommendations. Basic reports arrive within 48 hours, Standard reports in 24 to 48 hours and Premium reports the same day.
Check the roof from a window after a downpour. If water is still there a day or two later, have it checked.
What happens on the day
On the day, we begin with a quick chat about the roof and anything that is worrying you. After that, we check everything we can see safely. Most surveys take about one to two hours for an extension, garage or dormer roof, and around 3–4 hours for a commercial flat roof. For a visit in Grange Mills, parking and access are the things to plan: let us know about permits, visitor bays or off-street space, which floor the property is on and how to get into the loft. On the day, the roof is looked at from the ground, from windows, from inside the loft space and from the roof where it is safe.
- We start with the details: the address, the roof’s use and any leaks or stains.
- The roof is inspected from safe viewpoints, and from the roof itself where that’s safe.
- We check and photograph the covering, the falls, the upstands, the outlets, the trims and any rooflights.
- We check the rooms or spaces under the roof for staining where we can reach them.
- The findings are written up with photos and recommendations and emailed to you.
Before the survey
- Make sure pets are kept safely away
- Unlock side gates and any roof access doors
- Dig out any old roof reports or invoices
Booking a survey
If you have photos of the roof, send them over. Take them safely from the ground or a window; never climb up to get a better view. To send them or to book, call 07833 053749 or email us.