Greater London · London and the South East
Flat Roof Survey in Keston
Flat roof surveys in Keston and the rest of Greater London. Surveys run on weekdays, Saturdays and Sundays.
- Blistering in felt or asphalt
- Failed upstands where the roof meets a wall
- Splits and cracks in the covering
How a flat roof survey works in Keston
Ponding is frequently the first sign that something on a flat roof is not right. It can point to poor falls, a blocked outlet or a deck that is deflecting. We record where water sits, check the outlets and look for dips that suggest deflection. Where the deck may be a structural issue, our report says a structural engineer should look at it. If you’ve noticed gaps at upstands and abutments and splits and cracks in the covering, a survey will tell you what’s going on, on EPDM rubber, GRP fibreglass and felt flat roofs alike.
On a London roof terrace or a flat roof over a back addition, water frequently 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 Keston, the flat roof is often a shared part of the building.
The report is yours to share with whoever needs it: your solicitor, the seller, your insurer, a roofer or the building’s managing agent, whichever applies.
- Where
- Keston (BR2)
- Wider area
- Greater London
- Cost
- From £150 inc. VAT
- Your report
- Written, with photos, emailed to you
- Appointments
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
What we look for on each type of roof
Rooflights and upstands
Rooflights and fragile sheets are never walked on. We view them from safe positions and photograph what we see.
Single-ply membranes
On single-ply roofs, the welds between sheets are the key detail. We look at seams, corners and the joints around outlets and upstands.
What this survey can’t tell you
Our survey is not a RICS Level 2 or Level 3 survey, a structural engineer’s report or an asbestos survey. It also has these limits:
- A structural engineer’s assessment of the deck
- What’s under the membrane without opening it up
- Areas we cannot see or reach safely, including fragile rooflights and sheeting
If in doubt, phone 07833 053749 or use the contact form and we’ll recommend the right survey before you book. What our survey covers.
What this survey covers
- Mastic asphalt
- GRP fibreglass
- EPDM rubber
- Single-ply membranes
- Upstands and outlets
- Felt flat roofs
Keston questions
How do I find out if my home in Keston is listed?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
Is Keston in the area you cover?
Yes. Our area covers London and the South East, and Keston is part of that. You can call 07833 053749 or drop us an email with the address and some details.
Can you tell me how long my flat roof will last?
We do not give a fixed number of years, because so much depends on upkeep, exposure and workmanship. Our report describes the condition and what needs doing, and when.
Can you inspect my roof with a drone?
Where it’s applicable and safe, yes. We are a CAA-registered drone operator (Flyer ID and Operator ID), flying a sub-250g drone. It is included in the Drone Roof Survey and, where it applies, the Premium Survey.
How do I book a survey in Keston?
Just ring 07833 053749 or email us. We’ll ask a few questions, confirm the price and agree a date, weekday or weekend.
Which days do you carry out surveys?
Visits run seven days a week in the daytime, which suits people who work during the week. Let us know your preferred days when you book.
Can you survey in bad weather?
A survey can normally go ahead in light rain, and it can even help show where water is getting in. Heavy rain or strong wind can ground a drone and make the roof unsafe, so we’ll agree a new date if the weather is not suitable.
Tips that help
Small things make a difference, both for the survey and for the roof itself. Some pointers:
- File the paperwork for the roof and any repairs
- Look for standing water a day after rain
- Note any new marks on ceilings beneath the roof
- Have the roof looked at again after a severe storm
Landlords, owners and managing agents can keep the report as a dated record of the roof. It’s useful when planning upkeep and setting budgets, and it makes changes easy to spot at the next survey.
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.
Places near Keston
Also in Keston
What we do, step by step
Where it’s relevant and can be reached safely, the roof space is checked as well as the outside. In the loft, the signs we look for are staining, damp, daylight and sagging, as far as the space allows. All in, the survey usually takes about 1–2 hours for most houses, and about three to four hours for a commercial roof. In Keston, as in much of London, a good many properties are flats or terraces without side access, so the back of the roof is frequently seen from upstairs windows, from inside or, where a flight is allowed, from the air. Mention any building rules, key holders or managing agents when you book.
- You tell us about the roof, its covering if you know it, and any leaks.
- We look at the roof from wherever it can be seen safely.
- Every part of the roof we can see is checked: covering, falls, upstands, outlets, trims and rooflights.
- Where there is 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
- Check the loft hatch can be reached
- Keep pets in another room
- Buyers: confirm access with the estate agent or seller
Getting a price
Not sure which survey you need? It’s easiest to phone 07833 053749 or send us an email and describe the roof and what’s worrying you. We will explain the options and the price.
Advice
When to book a survey in Keston
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. Coverings that have hardened with age tend to suffer most.
Common reasons to book include:
- Blisters and bubbles in the covering
- Splits and cracks in the covering
- Damaged trims at the roof edge
- Pools of water lying on the roof
Landlords with a home close to Hayes (Kent) station may find that flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
What to check before booking
- What follow-up you get after the report
- What the survey won’t cover
- Which parts of the roof they’ll actually see
- Whether any drone flown is registered with the CAA
What you can safely check yourself
You can learn a lot from the ground. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Never climb onto the roof to look.
Inside, the loft is a good place to look, with care. Use a torch and stay on the joists or boards, checking for stains, damp wood or chinks of daylight.
What a flat roof survey looks like in Keston
About 2.2 miles south-east lies Down House, a reminder of how long the area around Keston has been built on. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and any change of roofing material on a listed home needs checking with the council first. Further from the centre, London’s housing takes in interwar semis with hipped roofs in clay or concrete tiles as well as slate-roofed terraces. If your home in Keston is one of them, bay roofs, hips and later dormers each have their own details. Mixed in with those pitched roofs are plenty of flat ones, over rear extensions, dormers, garages and shops.
If you live in an older home near Keston Parish Church, any flat roof added at the back or on a dormer is likely to be far younger, and less durable, than the main roof. Controlled parking zones are common in London, so mention any permit rules for Keston.
Keston is about 3 miles south of Bromley, in Greater London. Keston gets the same service as everywhere else we work: a careful look at what can be seen safely, photos and a clear written report. Keston is one of the places in Greater London where we work for flat roof surveys. London is in our area too.
Here we cover the BR2 postcode area for flat roof surveys. Streets in the area include Church Road, Greys Park Close and Heathfield Road. Close by, we survey roofs in Nash (1 mile west), Farthing Street (1 mile south-east), Locksbottom (1 mile north-east), Leaves Green (2 miles south) and Hayes (2 miles north-west). Larger places within reach include London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north).
Landmarks near Keston
We work in homes and buildings around South Park, Ravens Wood School and The Greyhound pub. Keston’s nearest station is Hayes (Kent) station, roughly 1.5 miles north-west of the centre. Well-known places in the area include Princess Royal University Hospital (1.1 miles east) and Bethlem Museum of the Mind (1.5 miles north). Green spaces nearby include West Kent Golf Course nature reserve and Summer Hill.