Buckinghamshire · London and the South East
Flat Roof Survey in Grendon Underwood
Surveys of flat roofs on homes, extensions and commercial buildings across Grendon Underwood, using drones and thermal imaging where it applies. Call or email for a price.
- Gaps at upstands and abutments
- Edge trims that have lifted or split
- A sagging deck under the covering
How it works
It helps to start with what’s prompted the survey: a purchase, a leak, a storm, new work or simply peace of mind. It helps us focus on what matters most to you. Most visits take between one and two hours at most homes, or half a day or so for a commercial building. In a hamlet or village like Grendon Underwood, a postcode doesn’t always lead to the right gate, so a few directions are welcome. The visit itself is the same as anywhere else.
- First you give us the address, what the roof covers and any leaks you’ve noticed.
- The roof is inspected from safe viewpoints, and from the roof itself where that’s safe.
- We check and photograph the covering, the falls, the upstands, the outlets, the trims and any rooflights.
- We check the rooms or spaces under the roof for staining where we can reach them.
- The findings are written up with photographs and recommendations and emailed to you.
Preparing for the visit
- For flats, make sure roof access has been agreed
- Find any records of previous roof work
- Let us know where we can park nearby
How to book
A quick phone call is typically the easiest start: ring 07833 053749 or send us an email and we will ask a few questions about the roof. You’ll have a price before anything is arranged.
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Flat roof surveys for homes and businesses in Grendon Underwood
Each type of flat roof has its own weak points. Built-up felt tends to blister and crack, asphalt crazes and splits, EPDM can lift at its laps, and GRP can crack at board joints and edge trims. On PVC and TPO single-ply roofs, we look closely at the welded laps, edges and fixings. Knowing what you have and how it’s doing helps you plan what comes next. If you’re worried about failed upstands where the roof meets a wall and blistering in felt or asphalt, we can find out what’s behind it, whatever the roof.
In a village or hamlet like Grendon Underwood, flat roofs are typically on extensions, garages, outbuildings or barn conversions. The checks are the same as anywhere: outlets, upstands, edges and the covering itself. The journey and access are planned beforehand. If there are outbuildings or garages with flat roofs, mention them when you book.
The report records the flat roof as we found it on the day. It is useful right away, and a good reference for later, for example when you want to check whether anything has changed.
- Place
- Grendon Underwood (HP18)
- Region
- Buckinghamshire
- Price
- From £150 inc. VAT
- Reports
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Insured
- PI and public liability insurance
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
What you can safely check yourself
You can learn a lot from ground level. With binoculars, look for slipped or missing slates and tiles, gaps along the ridge and leaning chimneys. Never climb onto the roof to look.
It helps to keep a record: when leaks happen, ground-level photos and any past roof work. Share it with us as you book.
What a flat roof survey looks like in Grendon Underwood
With Claydon House about 3.6 miles north-east, Grendon Underwood sits in an area with a long building history. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and the council can say whether a home is in a conservation area. A number of Buckinghamshire villages keep thatched roofs on their older buildings. In this part of the South East, older roofs are mostly slate or clay tile and many newer ones concrete tile. Mixed in with those pitched roofs are plenty of flat ones, over rear extensions, dormers, garages and shops.
For an older house near a landmark such as Church of St Leonard, the flat roofs on later extensions tend to wear out long before the main roof.
Grendon Underwood is about 6 miles east of Bicester, in Buckinghamshire. We provide flat roof surveys for householders, landlords and businesses in Grendon Underwood and the surrounding area. Our area takes in places right across Buckinghamshire. We also survey roofs in Oxford.
Flat roof surveys in HP18 work the same way as everywhere else we cover. If you need a flat roof survey at a property on Main Street, The Firs and Darley's Close or a nearby road, we can help. We also cover the places around Grendon Underwood: Edgcott (1 mile north), Ludgershall (2 miles south-west), Piddington (3 miles south-west), Blackthorn (4 miles west) and Brill (5 miles south-west). Within a short drive, we also cover Aylesbury (9 miles south-east), Buckingham (8 miles north), Elmhurst (9 miles south-east), Southcourt (10 miles south-east), Princes Risborough (13 miles south-east) and Haydon Hill (8 miles south-east).
Around Grendon Underwood
Not far away are Upper Ray Meadows.
Signs you need a flat roof survey in Grendon Underwood
A buyer’s general survey often recommends a closer look at a flat roof. Owners and managing agents use a survey to plan upkeep, or ahead of a sale or a new lease. In each case, the report gives a written, photographed record of the roof’s condition.
We are frequently asked to look at:
- Blocked or damaged outlets
- Failed upstands where the roof meets a wall
- Splits and cracks in the covering
- Loose or cracked edge trims
If you look after a building like Grendon Underwood Combined School, ponding and blocked outlets on a wide flat roof are worth catching before the next wet season.
Choosing a roof surveyor
- Whether any drone flown is registered with the CAA
- Which limits apply to the survey
- Which viewpoints they use to see the roof
- Their insurance cover
What affects the price in Grendon Underwood
Prices vary from roof to roof, and it comes down to:
- Any need for thermal images or a drone flight
- Extra roofs, like extensions, dormers or garages
- House, block, shop or office
- Whether you choose the Basic, Standard or Premium Survey
To find out what your survey will cost, call 07833 053749 or drop us an email and let us know about the roof. The price is agreed before a date is set.
What we need to know
You do not need to know any roofing terms. It is enough to let us know:
- The type of building and roof, such as pitched or flat
- Where water is showing inside, if it is
- The property’s address and postcode
- Dates you are working to, like exchange
Our phone lines are open seven days a week, including Saturdays and Sundays. For a price or to book, ring 07833 053749 or drop us an email.
Common questions in Grendon Underwood
Do you carry out roof surveys in Grendon Underwood?
Yes. We cover the whole of London and South East England, and Grendon Underwood is part of that. Just phone 07833 053749 or use the contact form and let us know about the property.
Do you cover smaller places like Grendon Underwood?
Yes. Grendon Underwood is within the area we cover, which takes in towns, villages and rural addresses. We work right across London and the South East. Let us know about access, parking and anything unusual about getting there when booking.
Can you tell me how long my flat roof will last?
We do not give a fixed number of years, because it depends on upkeep, weather and how the roof was laid. Our report describes the condition and what needs doing, and when.
How experienced are you?
Over 20 years and more than 5,000 surveys.
Do you carry professional indemnity insurance?
Our cover is professional indemnity plus public liability, and details are available on request.
Does a flat roof survey replace a RICS survey?
No. It’s a closer look at the flat roof, not a survey of the whole property. It complements a RICS home survey rather than replacing it, and structural calculations need a structural engineer.
What do I do with the report?
We email you the written report with photographs and recommendations. You can use it to talk to a seller, an insurer, a roofer or a managing agent, whichever applies.
Places near Grendon Underwood
What else we do in Grendon Underwood
How the survey changes by roof type
Single-ply membranes
Single-ply PVC and TPO membranes are common on commercial roofs and newer buildings. The survey looks at welded seams, edges, fixings and signs of damage.
GRP fibreglass
Movement in the deck or a thin layer of resin can lead to cracks in GRP. Our report notes cracks and any sign that the deck is flexing.
Why get it checked now?
Most flat roofs are out of sight, so they’re easy to forget. Owners often learn the roof is at the end of its life only when it leaks. Regular surveys mean it will not come as a surprise. Matching old materials, such as handmade tiles or stone slates, can take time to source. That is one more reason to find defects before they become urgent.
The cost of a survey depends on the roof: how big it is, how high it is, the number of separate roofs and how safely it can be seen. Prices start from £150, including VAT.
Why book with us
- Plain-English reports with photos
- Over 5,000 surveys carried out
- Independent findings on the roof’s condition
- CAA-registered drone operator (Flyer ID and Operator ID)
See what a roof survey costs and two real surveys.