Kent · London and the South East
Roof Leak Investigation in Cotman's Ash
Not sure what state the leaking roof is in? We carry out roof leak investigations in Cotman's Ash and across Kent.
- Damp on a chimney breast
- Water marks that spread in wet weather
- Leaks below a flat extension roof
What affects the price in Cotman's Ash
Prices vary from roof to roof, and it comes down to:
- The use of thermal imaging or a drone
- How tall the building is and how easy the roof is to see
- The type of building, from a house to a block or an office
- Extensions, dormers and garages with roofs of their own
Price depends partly on the package: from £150 for Basic, £250 for Standard and £400 for Premium, including VAT. The roof’s size, height and access matter as well.
Getting in touch
We’ll typically ask about:
- The style of property, from a terrace to a block
- Where the property is, with the postcode
- Dates you’re working to, like exchange
- Access details, like a loft hatch or a shared roof
Not sure which survey you need? It is easiest to call 07833 053749 or drop us an email and describe the roof and what’s worrying you. We’ll talk you through the options and what they cost.
How a roof leak investigation works in Cotman's Ash
Water is good at hiding where it gets in. Water frequently travels along timbers or underlay before it finds a way down, so the stain on your ceiling is seldom right under the hole. We follow it back towards where it starts, one likely route at a time. A repair aimed only at the stain can miss the cause entirely. Finding the route first lets the repair go where it is needed. If you’ve noticed water dripping from rafters or underlay and stains around a skylight, a survey will tell you what’s going on.
For a small place like Cotman's Ash, the inspection is the same as anywhere: the journey and access are just planned in advance. Let us know where the water shows, when it appears and anything you’ve noticed outside, along with any repairs done before. Photos of the stain and of the roof from outside are helpful too.
Nothing in the report is left vague: where something needs attention, it says so plainly, and where it can wait, that’s said too.
- Place
- Cotman's Ash (TN15)
- Region
- Kent
- Prices
- From £150 inc. VAT
- Your report
- Written, with photos, emailed to you
- Survey days
- Weekdays, Saturdays and Sundays
- Insurance
- Professional indemnity and public liability
- Call
- 07833 053749
- Updated
- 27 October 2026
What happens on the day
Safety comes first on every visit. Everything that can be seen safely is inspected, and if part of the roof cannot be seen, the report says so. Most visits take about 1–2 hours, more where the leak is intermittent or the roof is large. Rural addresses near Cotman's Ash can be hard to find from a postcode alone, so a few directions are welcome. The visit itself is the same as anywhere else.
- You tell us where the water shows and when it appears.
- The visit starts indoors, at the stain and in the loft.
- Outside, we check every likely route in.
- We use moisture detection, and thermal imaging where it’s useful.
- We email a report with photographs, the likely entry point and recommendations.
Preparing for the visit
- For a flat or shared roof, check access with whoever owns or manages the building
- Move anything stored under the loft hatch
- Let us know about parking near the property
Arrange a survey
To book a survey, call 07833 053749 or send us an email with the address and what you’d like to know about the roof. You’ll know the price before anything is booked.
Read more
Cotman's Ash roofs and the weather
Many older homes in Kent have handmade clay tiles, including Kent peg tiles held by pegs through two holes, and tile-hanging on their upper walls. Oast houses and timber-framed Wealden hall houses are part of the county’s older buildings too. Each of these roof types has its own typical places for water to get in. Historic houses such as Lullingstone Castle, about 3.4 miles north-west, show how far back building in the area around Cotman's Ash goes. Older homes in the wider area frequently have features worth a closer look, such as lead valleys, tall stacks and roofs that have been patched over the years, and a listed home or one in a conservation area may need consent for changes of material.
If you own a rental within reach of Kemsing station, tracing a leak quickly matters when a tenant is living with it. Take a building like Kemsing Primary School: tracing a leak on a big roof starts with where the water appears and works back.
Cotman's Ash is about 3 miles north-east of Sevenoaks, in Kent. In Cotman's Ash, as across Kent, every roof gets the same careful survey. Cotman's Ash is one of the towns and villages in Kent we cover. Our Maidstone page covers surveys nearby.
Surveys in TN15 work the same way as everywhere else we cover. Close by, we survey roofs in Woodlands (1 mile north-east), Heaverham (1 mile south-east), Knatts Valley (1 mile north), Romney Street (1 mile north-west) and Kemsing (1 mile south-west). We also work in nearby towns like Maidstone (13 miles east), Dartford (9 miles north), Sevenoaks (3 miles south-west), Royal Tunbridge Wells (13 miles south), Gravesend (10 miles north-east) and Tonbridge (8 miles south).
Landmarks near Cotman's Ash
Around Cotman's Ash, our work takes us to homes and buildings near The Rising Sun pub and Kemsing Down and the streets around them. The closest station to Cotman's Ash is Kemsing station, about 1.4 miles south. Nearby you will also find Kemsing Castle Bank (0.9 miles south-west) and Sevenoaks Hospital (2.8 miles south-west). For a walk, there’s Dryhill Nature Reserve.
Common roof problems in Cotman's Ash
When a slate slips or a tile cracks, the underlay takes the water. Ageing felt underlay eventually tears and lets water through, while some very old roofs have nothing under the coverings. Corroded nails, known as ‘nail fatigue’, are a frequent cause on slate roofs.
Typical things we are asked to look at include:
- Leaks below a flat extension roof
- Staining around the chimney inside
- Damp walls below an overflowing gutter
- Condensation that looks like a leak
The streets around a church such as Church of Saint Mary the Virgin are often among the oldest in a place, and if yours is one of the older homes nearby, lead flashings, valleys and old chimneys are typical places for water to get in.
What to check before booking
- How they’ll see the roof: from the ground, the loft, the roof or by drone
- Their drone registration, if they fly one
- When you will get the report
- Whether they hold professional indemnity and public liability insurance
Why act early in Cotman's Ash
A leak near lights or wiring needs attention quickly. Keep away from any fitting that water is reaching. Finding where the water is getting in should follow right away. Around Cotman's Ash, older homes often have old roof timbers, and water through a failed covering can rot timber if it’s left.
There are three survey packages: the Basic Survey from £150, the Standard Survey from £250 and the Premium Survey from £400, with VAT included. The price for your roof depends on its size, access and what you want to find out.
Why us?
- Clear package prices, including VAT
- Insured for professional indemnity and public liability
- Weekday and weekend surveys
- Satisfaction rate of 98%
Take a look at our cost guide or what we found on two real jobs.
Places near Cotman's Ash
Other services in Cotman's Ash
FAQs for Cotman's Ash
Is Cotman's Ash within the area you cover?
Yes, Cotman's Ash is covered. Our area covers London and South East England, and smaller places are part of that. The journey is planned ahead, so it is useful to know about access.
How do I find out if my home in Cotman's Ash is listed?
Your council is the best source, with Historic England’s list for listed buildings. Both listing and conservation areas can limit changes of roofing material.
Do you climb onto every roof?
Only where it’s safe to do so. We inspect whatever is safely visible: from the ground, from windows and vantage points, from the loft space, from the roof itself where safe and by drone where applicable. The report says if anything couldn’t be seen.
When does the report arrive?
That depends on the survey you book: the Basic Survey report arrives within 48 hours, the Standard Survey in 24 to 48 hours and the Premium Survey the same day. The report is emailed to you.
What does a roof survey cost?
Our price is from £150, including VAT. Our Basic Survey starts from £150, the Standard Survey from £250 and the Premium Survey from £400, all including VAT.
Can thermal imaging help find my roof leak?
It can, when the conditions are right. It works best after a sunny day, with a dry roof surface and little wind. Wet insulation holds heat longer than dry, which can show up on the image. We always check what it shows with moisture readings.
I live in a flat. Can you survey the roof?
Yes, once whoever controls the roof agrees access. We check the parts we’re given access to, and the report makes that clear.
Landlord and commercial surveys in Cotman's Ash
Shared roofs need a little more planning: access has to be agreed with whoever owns or manages the building. Mention it when you contact us and we’ll plan the visit with that in mind.
We survey roofs for landlords and agents as well as homeowners. The report gives you a dated record of the leaking roof, with photographs, which helps you plan work between tenancies.
How the survey changes by roof type
Chimney stacks
Damp on a chimney breast inside frequently starts at the top of the stack. Open, unused pots let rain fall down the flue.
Valleys
A valley leak can appear well away from the valley inside. From inside the loft space, we follow the water’s route back.