Kent · London and the South East
Knockholt Flat Roof Survey
We take a careful look at the flat roof at your property in Knockholt, with photos and a written report.
- Raised blisters across the surface
- Edge trims that have lifted or split
- Water getting in at rooflights
Different roofs, different checks
Felt and built-up roofs
Felt roofs often last around 15 to 20 years, depending on how they were laid and looked after. We record how yours is doing and where it’s weakest.
EPDM rubber
EPDM frequently lasts 30 to 50 years, but it relies on its seams, trims and upstands being well finished. We look closely at each of those details.
Flat roof survey in Knockholt
Flat roofs deal with rain in a very different way from pitched ones. Because rain sits on it for longer, a small split, an open seam or a blocked outlet matters more. We check the surface, the falls, the upstands and the edge trims, and we note any sign that the deck below has got wet. The aim is to find problems before they show up as a stain on a ceiling. We survey felt flat roofs, upstands and outlets and EPDM rubber, and the problems we are asked to look at most are splits and cracks in the covering and signs of deflection in the roof deck.
Some older homes in villages like Knockholt are listed or in a conservation area, and that can affect how an extension roof or dormer is re-covered. Check with the council before planning any change of material. Knowing the roof’s condition is the starting point. Changes that affect a listed building’s special interest need listed building consent.
We write the report in plain English, so you do not need to be a roofer to follow it. Each point is backed by a photograph where possible, with the urgent items made clear.
- Place
- Knockholt (TN14)
- Wider area
- Kent
- Price
- From £150 inc. VAT
- Your report
- Emailed report with photos and recommendations
- Appointments
- Weekdays, Saturdays and Sundays
- Insured
- PI and public liability insurance
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
When to book a survey in Knockholt
No flat roof covering lasts for ever. Around 15 to 20 years is common for felt, while EPDM often lasts 30 to 50 years and GRP up to about 30, though workmanship and upkeep make a big difference. We can tell you how your roof is doing, whatever its age.
A survey can pick up problems like:
- Water getting in at rooflights
- Damaged trims at the roof edge
- Splits and cracks in the covering
- Standing water left after rain
For an older house near a landmark like St Katharine's Church, the joins between later flat roofs and the old walls are where problems usually start.
Before you book any roof surveyor
- Their report turnaround times
- What’s outside the scope of the survey
- Their drone registration, if they fly one
- Their track record with similar roofs
What you can safely check yourself
A lot can be seen from ground level. With binoculars, look for slipped or missing slates and tiles, gaps along the ridge and leaning chimneys. Please do not climb up for a closer 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.
Why it is worth a survey now in Knockholt
A leak over an office, shop or unit can affect the people and stock underneath. Surveying the roof in good time means work can be planned and budgeted around the business. In a small place like Knockholt, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
We offer three survey packages: the Basic Survey from £150, the Standard Survey from £250 and the Premium Survey from £400, with VAT included. What your roof costs depends on its size, access and what you want to find out.
Why book us in Knockholt
- Drone and thermal imaging surveys available
- Insured for professional indemnity and public liability
- More than 20 years surveying roofs
- A written report with photos
See how roof surveys are priced and what we found on two real jobs.
What a flat roof survey looks like in Knockholt
With Down House about 2.7 miles north-west, Knockholt 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. Handmade clay tiles, including Kent peg tiles hung on pegs through two holes, are typical of older Kent buildings. The county’s older buildings also include oast houses and timber-framed Wealden hall houses. Next to the main roofs there is usually a flat roof somewhere, whether on an extension, a garage or a commercial unit.
If you let a flat or house near Knockholt station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Knockholt is about 4 miles north-west of Sevenoaks, in Kent. Anywhere in Knockholt, we can carry out flat roof surveys at your property. Our Kent coverage includes Knockholt and the places around it. You can also see our page for London.
We survey roofs across TN14 for flat roof surveys. That includes homes and businesses on Main Road and Blueberry Lane and the roads around them. We also cover Knockholt Pound (1 mile north-east), Halstead (2 miles north-east), Sepham Heath (2 miles north-east), Pratt's Bottom (2 miles north) and Twitton (3 miles east). Within a short drive, we also cover Dartford (11 miles north-east), Sevenoaks (4 miles south-east), Royal Tunbridge Wells (14 miles south-east), Gravesend (14 miles north-east), Tonbridge (11 miles south-east) and Northfleet (13 miles north-east).
Around Knockholt
In Knockholt, that means homes and buildings near The Three Horseshoes pub, among other places. The nearest railway station is Knockholt station, about 2.7 miles north-east of the centre. Well-known places in the area include Orpington Hospital (3.6 miles north) and Otford Heritage Centre (3.9 miles east). The countryside around Knockholt includes Betsom's Hill and Downe Bank.
How the survey works
The aim of the visit is simple: to look at the flat roof as closely as is safe and record what we find. Everything we note and photograph goes into the written report. The visit typically takes roughly 1–2 hours on an ordinary house, and about three to four hours for a commercial roof. Rural addresses near Knockholt can be hard to find from a postcode alone, so a few directions, or a note of a nearby landmark, help us arrive on time. After that, the survey runs as it would anywhere.
- We agree the roof to be surveyed, its use and any leaks you know about.
- We look at the roof from ground level, windows and the roof where it is 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.
Before the survey
- Note where any stains or damp appear
- Leave a clear route to the loft
- Unlock side gates and any roof access doors
Book a survey
For a price for flat roof surveys in Knockholt, call 07833 053749 or email us. The address, the type of property and what you need to know help us give you an accurate price.
Advice
How we price flat roof surveys
Not every roof costs the same to survey, and it comes down to:
- Which survey package you book
- Any need for thermal images or a drone flight
- How complicated the roof is, with its valleys, chimneys and parapets
- The size of the roof
One thing that affects the price is the package: Basic from £150, Standard from £250 or Premium from £400, all with VAT included. The roof’s size, height and access matter as well.
What we need to know
A little information up front helps. Please include:
- Any marks or damp showing indoors
- What made you get in touch
- The property’s address and postcode
- The kind of building and roof involved
Surveys can be booked for weekdays, Saturdays or Sundays. To arrange a day that suits you, call 07833 053749 or send us an email.
Places near Knockholt
More services for Knockholt
Common questions in Knockholt
How do I find out if my home in Knockholt is listed?
Start with Historic England’s list for listing and your council for conservation areas. Either can affect what roof work is allowed, so it is worth checking before planning any.
Is Knockholt within the area you cover?
We do. Villages and rural addresses get the same survey as a town house.
Can you survey at the weekend?
We survey seven days a week: weekdays, Saturdays and Sundays. Let us know which days suit you when you book.
Can you survey in bad weather?
Light rain is usually fine; heavy rain and wind are different. High wind or heavy rain can make access unsafe and ground a drone, so we’d move the date with you.
What’s the best way to book?
It’s easiest to call 07833 053749 or email us. Give us the address and some details about the roof, and we’ll suggest the right survey. We survey on weekdays, Saturdays and Sundays.
How quickly is the report sent?
Report times are set by the package. Basic is within 48 hours, Standard is 24–48 hours and Premium is the same day. Mention any deadline when you book.
Do you go up onto the roof?
Where it’s safe, the roof is inspected from the roof itself. If not, we use safe viewpoints and look inside, and the report says if any part couldn’t be seen. We do not walk on fragile rooflights or sheeting.