Greater London · London and the South East
Flat Roof Survey in St John's Wood
Flat roof surveys in St John's Wood, with over 20 years’ experience behind it. Every survey ends with a written report and photographs.
- Pools of water lying on the roof
- Splits, cracks and crazing
- Loose or cracked edge trims
How a flat roof survey works in St John's Wood
Our flat roof survey checks the waterproof covering and every detail around it, from edges and upstands to outlets and rooflights. Felt, asphalt, EPDM, GRP and single-ply PVC or TPO roofs are all part of the work. We survey extension, garage and dormer roofs as well as bigger roofs on flats, offices and units. The findings go into a written report with photos, setting out the defects and what we’d recommend. We survey single-ply membranes, EPDM rubber and upstands and outlets, and people most frequently book us about signs of deflection in the roof deck and water getting in at rooflights.
Offices, shops and blocks of flats across London frequently have large flat roofs with plant, rooflights and walkways. Every penetration and upstand is a place where a membrane can fail. In St John's Wood, roof access is agreed with the building manager or owner beforehand. Rooflights, plant supports and pipe entries are common places for a membrane to fail.
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, whichever applies.
- Location
- St John's Wood (NW8, NW6, NW3)
- Wider area
- Greater London
- Price
- From £150 inc. VAT
- Report
- Emailed report with photos and recommendations
- Survey days
- Monday to Sunday, daytime
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Flat and commercial roofs around St John's Wood
Close to the centre of London, a great many houses are Victorian or Edwardian terraces, many of them roofed in Welsh slate. Many have butterfly roofs draining to a central valley gutter, with parapet walls and gutters hidden behind them. Lead flashings, party-wall upstands and shared chimney stacks are typical of these houses, if yours is one of them. Mixed in with those pitched roofs are plenty of flat ones, over rear extensions, dormers, garages and shops. There are several hotels within about a mile and a half of St John's Wood, and like offices and blocks, hotels often sit under flat roofs. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use.
The streets around a church such as Church of All Souls are often among the oldest in a place, and if yours is one of the older homes nearby, later flat-roofed additions are common on older houses, and their edges and upstands frequently show the first signs of wear. Shop and office owners around O2 Centre may find that a flat roof over a business is out of sight and out of mind until it leaks.
St John's Wood is about 1 mile south of Hampstead, in Greater London. We carry out flat roof surveys for homes and businesses in St John's Wood and nearby. Across Greater London, we cover St John's Wood.
Every address in NW8, NW6 and NW3 is within our area for flat roof surveys. Whether your property is on The Lane, Hall Road and Hill Road or anywhere close by, we can help. Being close to the A5205, St John's Wood is easy for us to reach for flat roof surveys. Other places close to St John's Wood include South Hampstead (1 mile north), Swiss Cottage (1 mile north), Primrose Hill (1 mile north-east), Lisson Grove (1 mile south) and Haverstock (1 mile north-east). Further out, we also cover London (4 miles south-east), Kensington (3 miles south-west), St Pancras (3 miles east), Shoreditch (4 miles east), Walthamstow (7 miles north-east) and Hoxton (4 miles east).
Around St John's Wood
Locally, jobs take us to homes and businesses close to Cecil Sharp House, Primrose Hill and Arnold House School. You’ll also find Quintin Kynaston Community Academy (less than half a mile north-west) and Cafe Med pub (under half a mile north-west). St John's Wood has its own railway station: South Hampstead station. Nearby you’ll also find Hospital of St John and St Elizabeth (less than half a mile south) and Montfichet's Tower (3.5 miles south-east). Green spaces nearby include The Long Water and Primrose Hill.
Why it is worth a survey now in St John's Wood
Ponding seldom gets better on its own. It normally points to an outlet, the falls or a sagging deck, and each wet season wears the covering further. Finding the cause now keeps more options open. In St John's Wood, as in much of London, water from a roof defect can reach a neighbour’s home as easily as yours: a blocked parapet gutter or slipped slate can let water into the flat below or the house next door. Finding it early keeps the work smaller.
A small, low roof with good viewpoints takes less time than a tall, complicated one, and the package you pick makes a difference too. The price is always agreed first.
Why choose Independent Roof Survey in St John's Wood
- Weekday and weekend surveys
- More than 5,000 surveys completed
- Package prices that include VAT
- 98% customer satisfaction
How we price flat roof surveys
What a survey costs depends on the time and equipment it needs. The main factors are:
- The height of the building and how the roof can safely be seen
- Whether you choose the Basic, Standard or Premium Survey
- Extra roofs, like extensions, dormers or garages
- How complicated the roof is, with its valleys, chimneys and parapets
The cost of a survey depends on the roof: its size, its height, how many sections it has and how it can be reached and seen safely. Flat roof survey starts from £150, including VAT.
Helping us price your survey
Here’s what helps us most when you contact us:
- How the loft is reached, if there is one
- The kind of building and roof involved
- Your postcode, so we can check access and travel
- Where any leaks, stains or damp patches show inside
Once you know what you need, call 07833 053749 or drop us an email. From there it’s a case of choosing a package, agreeing the price and fixing a day.
Landlord and commercial surveys in St John's Wood
Letting agents often book on a landlord’s behalf. Access is agreed with the tenant beforehand.
Freeholders and residents’ companies use a roof report to plan and budget.
Also near St John's Wood
More services for St John's Wood
Questions from St John's Wood
Do you look at commercial flat roofs near St John's Wood, such as hotels?
Yes, we cover commercial roofs as well as homes. Roof access is agreed with the building manager or owner beforehand.
Does a conservation area affect roof work in St John's Wood?
For listing, use Historic England’s list; for conservation areas, ask the council. The answer matters most when a change of material is on the cards.
How soon will I get the report?
The Premium Survey report comes the same day, the Standard within 24–48 hours and the Basic within 48 hours. Each one is emailed, ready to forward.
Does the weather affect the survey?
A survey can typically go ahead in light rain, and it can even help show where water is getting in. Strong wind or heavy rain can stop drone flights and make roof access unsafe, so we will agree a new date if the weather isn’t suitable.
Will you go up on the roof?
Only when it is safe. Safe viewpoints, the roof space and a drone where it applies cover most of what’s needed.
What will the report tell me?
A report with photographs, covering the condition of the flat roof, the defects we found and what we recommend, by urgency where it matters. The Standard Survey adds moisture detection and a structural check, and the Premium Survey adds thermal imaging, drone inspection where it applies and structural analysis.
Is St John's Wood in your area?
Yes. We survey roofs in St John's Wood and the rest of Greater London, as part of our work across London and South East England. For a price, call 07833 053749 or use the contact form.
The survey, step by step
The visit usually starts outside and finishes in the loft: first the slopes, edges and gutters from every safe viewpoint, then the roof space where it can be reached. All told, expect 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 St John's Wood we work round the house, using the street, the windows, the loft and any safe vantage point behind it. If other people live in the building, let us know who can let us into the shared parts.
- You let us know about the roof, its covering if you know it, and any leaks.
- The roof is inspected from safe viewpoints, and from the roof itself where that is safe.
- The covering, falls, upstands, outlets, edge trims and rooflights are checked and photographed.
- We check the rooms or spaces under the roof for staining where we can reach them.
- You get a written report with photos and our recommendations.
How to prepare
- Keep pets inside or away from the areas we are looking at
- Note where any stains or damp appear
- Jot down any questions you want answered
Book a survey
If you’re buying, it’s useful to book soon after your offer is accepted, so you have the findings in time to act on them before you exchange. Otherwise, simply call 07833 053749 or drop us an email whenever suits you.
Read more
What we are asked to look at in St John's Wood
Water that does not drain sits on the roof and speeds up wear. It typically comes from poor falls, a blocked outlet or a deck that has dipped. Where trees are close by, leaves and silt can block an outlet within a single autumn.
Common reasons to book include:
- Ponding water that doesn’t drain away
- Outlets choked with leaves and silt
- Blistering in felt or asphalt
- Failed seals around rooflight kerbs
Winfield House, about 0.6 miles south-east, is one of the historic houses in the wider area around St John's Wood. Older houses nearby often have flat roofs added much later, built to very different standards from the main roof.
Before booking anyone
- What exactly goes into their report
- What’s outside the scope of the survey
- Will they check the loft as well as the outside?
- Whether they hold professional indemnity and public liability insurance
Roof by roof
Mastic asphalt
With age, asphalt can harden and crack with movement. The report shows where it’s cracking and how far it seems to extend.
Single-ply membranes
On single-ply roofs, the welds between sheets are the key detail. Seams, corners and the details around outlets and upstands get a proper look.