Greater London · London and the South East
Flat Roof Survey in St Johns
Surveys of flat roofs on homes, extensions and commercial buildings across St Johns, with drones and thermal imaging where they help. Get in touch for a price.
- Splits and cracks in the covering
- Blistering in felt or asphalt
- Standing water left after rain
About our flat roof survey in St Johns
Each flat roof is looked at from the safest viewpoints we have: from the roof itself where that is safe, from windows and nearby vantage points, and from inside where there is access. Fragile rooflights and fragile sheets are never walked on. If part of the roof can’t be seen or reached safely, the report says so, so the limits of the survey are clear. If you’ve noticed loose or cracked edge trims and a sagging deck under the covering, we can find out what’s behind it, on mastic asphalt, single-ply membranes and GRP fibreglass alike.
Across London, flat roofs are everywhere, from back additions and dormers to roof terraces, blocks of flats and offices. They’re covered in felt, asphalt, EPDM rubber, GRP fibreglass or single-ply membranes, each with its own weak points. Which one is on a roof in St Johns shapes how it’s checked. Many older flat roofs are felt or asphalt, and many newer ones EPDM rubber or GRP.
The report does not just list problems. For each finding, it explains what it is, why it matters and what we’d recommend.
- Location
- St Johns (SE13, SE10, SE8)
- Region
- Greater London
- Prices
- From £150 inc. VAT
- Reports
- A written report with photos, by email
- Appointments
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Updated
- 27 October 2026
Questions from St Johns
Will parking be an issue for a roof survey in St Johns?
It depends on the street. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well.
Do you cover commercial flat roofs around St Johns?
Yes. As well as homes, we check flat roofs on offices, hotels, blocks of flats and commercial units. Larger commercial roofs are quoted for the building.
Do you carry professional indemnity insurance?
We are covered by professional indemnity and public liability insurance, for every survey we carry out.
Do you survey roofs on blocks of flats?
Yes. A shared roof needs access agreed first. Let us know about it as you book and we will explain what’s needed.
Will you photograph what you find?
Yes. We photograph the roof as we go, and they go into the written report.
How much is a survey?
Flat roof survey starts from £150, including VAT. What you pay for your roof depends on its size, height, access and the package, and it’s agreed before booking.
Does the weather affect the survey?
It depends on the weather and the survey. Strong wind or heavy rain can make access unsafe and ground a drone, so we’d move the date with you.
Common roof problems in St Johns
Water that doesn’t drain sits on the roof and speeds up wear. It typically comes from poor falls, a blocked outlet or a deck that has dipped. Leaves and silt from nearby trees can soon choke an outlet.
It’s worth booking a survey if you’ve seen:
- A sagging deck under the covering
- Outlets that hold water back
- Upstands pulling away from walls
- Ponding water that doesn’t drain away
If your home is one of the older ones in the streets near Church of St John, any flat roof added at the back or on a dormer is likely to be far younger, and less durable, than the main roof.
Before you book any roof surveyor
- What experience they bring
- What’s outside the scope of the survey
- Will the report include photos?
- Whether the loft is part of the inspection
DIY checks: what’s safe
Fresh stains on ceilings or walls after rain are worth noting. Take a photo and write down when you saw it, which helps when we check the roof.
A DIY look is useful, but it is not a survey. You won’t see flashings, valleys or the backs of chimneys properly from ground level, and those are details a survey looks at closely.
How the survey works
We work from the outside in: first the slopes, edges and gutters from every safe viewpoint, then the loft space where it can be reached. In total, it takes an hour or two for most houses, with bigger or more complicated roofs taking longer. From the street, a London terrace typically shows only its front slope or parapet, so a visit in St Johns moves between viewpoints: the pavement, upstairs windows, the loft and any safe spot at the back. If other people live in the building, let us know who can let us into the shared parts.
- We start with the details: the address, the roof’s use and any leaks or stains.
- We check the roof from wherever it can safely be seen.
- Every part of the roof we can see is looked at: covering, falls, upstands, outlets, trims and rooflights.
- Inside, we look for damp and staining under the roof where there is access.
- You get a written report with photographs and our recommendations.
Before we arrive
- Let us know where we can park nearby
- Keep pets inside or away from the areas we’re looking at
- Have any questions written down, so nothing gets missed
How to book
Buyers should book once an offer has been accepted, so you have the findings in time to act on them before you exchange. Otherwise, simply ring 07833 053749 or send us an email whenever suits you.
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For landlords and managing agents
We survey roofs for landlords and letting agents as well as householders. The report gives you a dated record of the flat roof, with photographs, useful for planning maintenance.
Landlords, agents and building managers in St Johns and across Greater London can book any of our surveys. To discuss a property or a block, call 07833 053749 or send us an email.
What a flat roof survey looks like in St Johns
St Johns has a number of hotels within about a mile and a half, and hotels, like offices and blocks of flats, often have flat roofs. If you look after one, a leak through a flat roof can put a room out of use. Close to the centre of London, a great many houses are Victorian or Edwardian terraces, many of them roofed in Welsh slate. A butterfly roof with a central valley gutter, tucked behind a parapet wall, is common on these houses. Lead flashings, party-wall upstands and shared chimney stacks are typical of these houses, if yours is one of them. Next to the main roofs there’s normally a flat roof somewhere, whether on an extension, a garage or a commercial unit.
Shop and office owners around Lewisham Shopping Centre may find that the flat roofs over shops and commercial units are worth checking before a leak, not after. If you own a rental within reach of St Johns station, the flat roof over a let home is worth a look before it becomes a tenant complaint.
St Johns is about 4 miles south-east of London, in Greater London. St Johns is part of the area we cover and the surrounding area as part of our work across London and the South East. St Johns is one of the places in Greater London where we work.
Here we cover the SE13, SE10 and SE8 postcode area for flat roof surveys. That includes homes and businesses on Avon Road, Mill Lane and Clare Road. St Johns is on the A2210 and A2211, so it’s easy for us to get to. If you are just outside St Johns, we cover New Cross (1 mile west), Deptford (1 mile north), Lewisham (1 mile south-east), Telegraph Hill (1 mile west) and Ladywell (1 mile south). Within a short drive, we also cover London (4 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (8 miles west), St Pancras (6 miles north-west) and Shoreditch (5 miles north-west).
Near you in St Johns
Typical jobs here are in homes near Wickham Arms, Brookmill Park and Addey and Stanhope School, among other places. Other local landmarks include St. Paul's (0.7 miles north) and Laban Centre (0.8 miles north). St Johns has its own railway station: St Johns station. Well-known places in the area include Fan Museum (0.9 miles north-east) and Lewisham Shopping Centre (0.7 miles south-east). Open spaces near St Johns include Brookmill Road Local Nature Reserve and Tower Hill.
Why it is worth a survey now in St Johns
A small split in a flat roof is usually a modest job when it’s found early. Leave it, and water can get into the insulation and deck, which can turn a patch into a replacement. A survey now shows which you are dealing with. London’s older roofs frequently have bitumen felt underlay or none at all, so a slipped slate can soon mean water inside. Left alone, that means wet timbers and plaster, which is a far bigger job than the roof fault itself.
A small, low roof with good viewpoints takes less time than a tall, complicated one, and the package you pick makes a difference too. We will give you the figure before anything is booked.
Why choose Independent Roof Survey in St Johns
- More than 5,000 surveys completed
- An independent look at the roof
- CAA-registered drone operator (Flyer ID and Operator ID)
- Drones and thermal imaging where applicable
What we cannot see
To be straight with you, a roof survey has limits:
- A structural engineer’s assessment of the deck
- A fixed date for when the roof will need replacing
- Hidden layers beneath the covering
If you’re not sure which survey you need, ring 07833 053749 or drop us an email and we’ll give you a straight answer before booking. What our survey covers.
Roof types and parts we check
- Upstands and outlets
- EPDM rubber
- Felt flat roofs
- Mastic asphalt
- GRP fibreglass
- Single-ply membranes