Greater London · London and the South East
Flat Roof Survey in Carshalton
Surveys of flat roofs on homes, extensions and commercial buildings in Carshalton. More than 5,000 surveys completed across London and South East England.
- Splits, cracks and crazing
- Failed seals around rooflight kerbs
- Blistering in felt or asphalt
Different roofs, different checks
GRP fibreglass
A GRP fibreglass roof is a hard, resin-bonded surface over a timber deck. We look for cracks at board joints, around trims and at upstands.
Felt and built-up roofs
Many extensions, garages and dormers have a felt roof laid in layers. We look for blistering, cracking, split laps and worn mineral surfacing.
Flat roof survey in Carshalton
Our flat roof survey checks the waterproof covering and every detail around it, from edges and upstands to outlets and rooflights. We cover felt, mastic asphalt, EPDM rubber, GRP fibreglass and single-ply roofs. We survey extension, garage and dormer roofs as well as bigger roofs on flats, offices and units. You get a written report with photos and our recommendations. We are often asked to look into outlets that hold water back and blisters and bubbles in the covering, across upstands and outlets, mastic asphalt and GRP fibreglass.
Commercial and residential blocks across London often have big flat roofs with plant, rooflights and access walkways. Every penetration and upstand is a place where a membrane can fail. In Carshalton, roof access is agreed with the building manager or owner beforehand. Plant bases, rooflights and cable entries are all places where water can get in.
The written findings come by email, ready to forward to whoever needs them. Turnaround is within 48 hours for Basic, 24–48 hours for Standard and same day for Premium.
- Place
- Carshalton (SM5, SM1, SM6)
- Region
- Greater London
- Price
- From £150 inc. VAT
- Report
- Written, with photos, emailed to you
- Appointments
- Monday to Sunday, daytime
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
Signs you need a flat roof survey in Carshalton
The surface of a flat roof heats up and cools down far more than the rooms below. This constant movement works at laps, seams and board joints, and in time it can open up splits and cracks. Older coverings that have lost their flexibility are the most likely to suffer.
Things that frequently lead to a survey include:
- Ponding water that does not drain away
- Splits, cracks and crazing
- Blocked or damaged outlets
- Gaps at upstands and abutments
Anyone responsible for a site like Carshalton High School for Girls will know that a large flat roof with a good many outlets and rooflights has many places where a membrane can fail.
Choosing a roof surveyor
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
- What experience they bring
- Whether VAT is in the quoted price
- Whether the loft is part of the inspection
Carshalton questions
How do I find out if my home in Carshalton is listed?
Start with Historic England’s list for listing and your council for conservation areas. It’s worth checking before planning roof work, as both can affect what’s allowed.
Will parking be an issue for a roof survey in Carshalton?
Parking in Carshalton, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Does the survey cover asbestos?
Our survey doesn’t include asbestos testing. Buildings built or refurbished before 2000 may contain asbestos, for instance in cement roof sheets. Anything that might contain it is flagged, so a specialist asbestos surveyor can check before work starts.
Do you work in Carshalton?
Yes. We survey roofs in Carshalton and the rest of Greater London. For a price, ring 07833 053749 or email us.
Will you walk on the flat roof?
Only where it is safe to do so. Otherwise we use windows, vantage points and the spaces below, and we note any area we couldn’t see. We don’t walk on fragile rooflights or sheeting.
Do you give a life expectancy for the roof?
We do not put a figure on it. Typical ranges are around 15 to 20 years for felt, 30 to 50 for EPDM and up to about 30 for GRP, but the report tells you how your roof is really doing.
Can you survey any kind of flat roof?
Felt, asphalt, EPDM, GRP and single-ply roofs are all covered. If you do not know what your roof is, we will identify it on the day.
What happens on the day
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, including by drone where it is applicable and the weather allows. Most surveys take roughly 1–2 hours for an extension, garage or dormer roof, and around 3–4 hours for a commercial flat roof. Surveys in Carshalton can be booked for any day of the week. London parking is frequently by permit or pay-and-display, so it’s useful to know what’s near you. Upstairs rooms at the back are useful too, as they frequently give the best view of a rear addition.
- We agree the roof to be surveyed, its use and any leaks you know about.
- The roof is viewed from safe positions, including the roof itself where that’s safe.
- We check the covering for splits, blisters, ponding and wear.
- We photograph and record the outlets, upstands, trims and rooflights.
- A written report with photos and recommendations is emailed to you.
Getting ready for the survey
- Move anything stored under the loft hatch
- If you are buying, let the agent know when we are coming
- Let us know about parking near the property
Arrange a survey
To get a price for flat roof surveys in Carshalton, ring 07833 053749 or send us an email. Some details about the property and the roof help us price the survey accurately.
Advice
Honest limits
No survey can tell you everything, and it is better to know them up front. Bear these in mind:
- Parts of the roof that aren’t safe to walk on or view
- Hidden layers beneath the covering
- Whether the deck or joists are strong enough
If you’re not sure which survey you need, ring 07833 053749 or email us and we will give you a straight answer before booking. What a survey covers and doesn’t.
What we look at
- GRP fibreglass
- Single-ply membranes
- Mastic asphalt
- EPDM rubber
- Felt flat roofs
- Upstands and outlets
For landlords and managing agents
Surveys can also be booked by buyers’ agents acting for a client. Reports are emailed, so they’re easy to pass on, photographs included.
Managing agents and residents’ management companies use roof surveys to plan maintenance. The report sets out what needs attention now and what can wait, which helps with budgets and planning.
Can I check my roof myself?
Fresh stains on ceilings or walls after rain are worth noting. Photograph them and note the date, as it helps a surveyor trace the cause.
Watch the gutters in a downpour, from a window or the ground. Water spilling over the edge can be a sign of a blockage or a gutter that has dropped.
Flat roof surveys around Carshalton
In outer London, interwar semis with hipped, tiled roofs sit alongside older slate-roofed terraces. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. The wider area around Carshalton has a long history of building, with Nonsuch Mansion about 2.7 miles west. 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.
If you let a flat or house near Carshalton station, the flat roof over a let home is worth a look before it becomes a tenant complaint. If you look after a shop, office or commercial unit, for instance near Centrale Croydon, outlets and upstands on commercial flat roofs are the places to check before trouble starts.
Carshalton is about 4 miles south-east of Wimbledon, in Greater London. We visit Carshalton as part of our work across Greater London, for homes and businesses alike. Carshalton is one of the places in Greater London where we work for flat roof surveys. For surveys nearby, see our London page.
Postcode districts we cover here for flat roof surveys: SM5, SM1 and SM6. If you need a flat roof survey at a property on Station Road, High Street and The Square or a nearby road, we can help. Main roads around Carshalton include the B277 and B278, which makes travel easy. Nearby, we also carry out flat roof surveys in The Wrythe (1 mile north), Wallington (1 mile east), St Helier (1 mile north-west), Rosehill (1 mile north-west) and Benhilton (1 mile west). We also work in nearby towns like London (10 miles north), City of Westminster (10 miles north), Marylebone (10 miles north), Kensington (9 miles north), St Pancras (11 miles north) and Shoreditch (12 miles north).
Landmarks near Carshalton
In Carshalton, that means homes and buildings near The Railway Tavern, Carshalton Park and Sutton College of Learning for Adults, among other places. Carshalton has its own railway station: Carshalton station. A little further out are St Helier Hospital (1 mile north-west) and Centrale Croydon (2.9 miles east). For a walk, there’s Duppas Hill and Sutton Ecology Centre Grounds.