Greater London · London and the South East
Thornton Heath Flat Roof Survey
Flat roof surveys in Thornton Heath from an independent, experienced roof surveyor. Over 5,000 surveys and 20+ years behind us.
- Damaged trims at the roof edge
- Blocked or damaged outlets
- Failed seals around rooflight kerbs
Landlords, agents and block managers in Thornton Heath
Buyers’ agents can book surveys on behalf of their clients. The report is emailed, so it can go straight to your client.
We also survey roofs for businesses and commercial landlords, including offices, shops and units. Bigger roofs take more time.
How a flat roof survey works in Thornton Heath
Water through a flat roof doesn’t always come in where the stain is. It may start at a split, a lifted seam or a failed upstand well away from the damp patch. Our survey covers the whole roof, not just the part above the mark, and photograph anything that could let water in. A roofer can then start from a clear picture of the problem. We are often asked to look into cracked or split membrane and a sagging deck under the covering, on single-ply membranes, GRP fibreglass and mastic asphalt.
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 Thornton Heath, the flat roof is often a shared part of the building.
You can share the report with anyone who needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent.
- Where
- Thornton Heath (CR7, SW16, SE25)
- Wider area
- Greater London
- Price
- From £150 inc. VAT
- Report
- Written, with photos, emailed to you
- Appointments
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
What affects the price in Thornton Heath
The price reflects the time and kit the roof needs. That comes down to:
- Commercial roofs and larger buildings
- If the survey needs thermal imaging or a drone
- Features like valleys, chimneys, dormers and parapets
- How many separate roofs there are, such as extensions, dormers and garages
What a survey costs comes down to the roof itself: how big it is, how high it is, the number of separate roofs and how it can be reached and seen safely. Prices start from £150, including VAT.
Helping us price your survey
When you call or email, these details help:
- What’s prompted the survey
- How the loft is reached, if there is one
- Where the property is, with the postcode
- The kind of building and roof involved
Not sure which survey you need? It’s easiest to phone 07833 053749 or use the contact form and describe the roof and why you want it surveyed. We’ll explain the options and the price.
When you need someone else
It helps to know what a survey won’t do before booking:
- Parts of the roof that aren’t safe to walk on or view
- Testing older roof sheets for asbestos
- Structural calculations, which need a structural engineer
If in doubt, ring 07833 053749 or use the contact form and we’ll suggest the right survey. What a survey covers and doesn’t.
What we check
- Single-ply membranes
- Upstands and outlets
- Felt flat roofs
- Mastic asphalt
- GRP fibreglass
- EPDM rubber
Flat and commercial roofs around Thornton Heath
About 2.4 miles north-east lies Kingswood House, a reminder of how long the area around Thornton Heath has been built on. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and the council can say whether a home is in a conservation area. Outer London has a good many Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, frequently with hipped roofs in clay or concrete tiles. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
Anyone responsible for a site like Winterbourne Junior Girls' School will know that ponding and blocked outlets on a wide flat roof are worth catching before the next wet season. Controlled parking zones are common in London, so mention any permit rules for Thornton Heath, along with any off-street space. Shop and office owners around Centrale Croydon may find that outlets and upstands on commercial flat roofs are the places to check before trouble starts.
Thornton Heath is about 7 miles south of London, in Greater London. Thornton Heath is part of the area we cover and the surrounding area across London and South East England. Across Greater London, we cover Thornton Heath and the places around it. There’s also a page for London.
Flat roof surveys in CR7, SW16 and SE25 work the same way as everywhere else we cover. We offer flat roof surveys to properties on Ena Road, Elm Road and Mayo Road. Being close to the A23 and A212, Thornton Heath is simple for us to get to. If you’re just outside Thornton Heath, we cover Norbury (1 mile north), Pollards Hill (1 mile north), Mitcham (2 miles west), Hackbridge (2 miles west) and Eastfields (2 miles west). We also work in nearby towns such as London (7 miles north), City of Westminster (8 miles north), Marylebone (8 miles north), Kensington (8 miles north-west), St Pancras (9 miles north) and Shoreditch (9 miles north).
Local landmarks in Thornton Heath
We work in homes and buildings around The Archbishop Lanfranc School, Prince George pub and Grangewood Park, among other places. Thornton Heath has its own railway station: Thornton Heath station. A little further out are Centrale Croydon (1.7 miles south) and Croydon University Hospital (0.7 miles south). Green spaces nearby include Biggin Wood and Duppas Hill.
Roof by roof
Single-ply membranes
Single-ply relies on its welded laps staying sound. Seams, corners and the details around outlets and upstands get a close look.
Mastic asphalt
Asphalt has no laps, so its weak points are cracks and the skirtings at walls and upstands. We record any crazing or splits and where water may be getting in.
How the survey works
Safety comes first on every visit. Everything that can be seen safely is inspected, and if part of the roof cannot be seen, the report says so. The survey typically takes an hour or two for a house, or half a day or so for a commercial building. Many London properties are flats or terraces with no side access, so rear slopes are viewed from windows, the loft or, where a flight is allowed, by drone. Mention any building rules, key holders or managing agents when you book.
- 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.
- The covering, falls, upstands, outlets, edge trims and rooflights are checked and photographed.
- Where there’s safe access, we look at the ceilings and spaces below for signs of water.
- You get a photo-illustrated written report and our recommendations.
Getting ready for the survey
- Keep pets out of the way during the survey
- Have any paperwork from past roof work to hand
- Agree roof access with the managing agent if it is shared
Getting a price
When you’re ready to go ahead, call 07833 053749 or use the contact form. From there it is a case of choosing a package, agreeing the price and fixing a day, weekday or weekend.
Read more
Practical tips
Getting the most from a flat roof survey starts before we arrive and carries on afterwards. Tips:
- Have the roof looked at again after a severe storm
- Keep records of when the roof was laid and what work has been done
- Watch the ceilings below the flat roof for stains
- Keep clear of rooflights and fragile roof sheets
Once we’ve been, the findings are written up with photos. It explains the covering, its condition and every defect, and what we recommend. Basic reports arrive within 48 hours, Standard reports in 24 to 48 hours and Premium reports the same day.
Keep foot traffic on a flat roof to a minimum. If access is needed, boards or walkways help protect the covering, and to keep well clear of rooflights and fragile sheeting.
Your questions about flat roof surveys in Thornton Heath
Do you carry out roof surveys in Thornton Heath?
Yes, Thornton Heath is one of the places we work. Every survey there gets the same written report with photos.
Will parking be an issue for a roof survey in Thornton Heath?
Sometimes, yes. If Thornton Heath has controlled parking where you are, a visitor permit is the easiest answer, and a driveway is even better.
What if it rains on the day?
A survey can normally go ahead in light rain, and it can even help show where water is getting in. Strong wind or a downpour can stop drone flights and make roof access unsafe, so we will agree a new date if the weather is not suitable.
How long does the survey take?
Time on site depends on the roof; most visits take about one to two hours at a typical home, and longer for a large or complex roof. The written report follows by email.
How long have you been surveying roofs?
More than 5,000 surveys over 20+ years, across London and South East England.
Is it a structural engineer’s report?
No. We’re experienced roof surveyors, and visible signs like sagging are noted, but we don’t provide calculations or an engineer’s opinion. The report will say if you need an engineer.
What’s the best way to book?
To book, phone 07833 053749 or email us with the address, the type of property and what’s prompted the survey. We’ll confirm the price and agree a day with you.