Oxfordshire · London and the South East
Roof leak investigation in Merton, Oxfordshire
Roof leak investigations in Merton from an independent, experienced roof surveyor. Over 5,000 surveys and 20+ years behind us across London and the South East.
- Drips in the loft during heavy rain
- Stains around a skylight
- Leaks below a flat extension roof
About our roof leak investigation in Merton
Not every drip is a leak. In a badly ventilated roof space, condensation can form under the roof and drip, leaving marks that look just like rainwater. Knowing which it is means the right fix can be done, because they need very different work. We look at the pattern of damp, the weather and the ventilation before reaching a view. If you’ve noticed water through the ceiling under a flat roof and water coming in around a roof light or dormer, we can find out what’s behind it, whatever the roof.
Many homes in small places like Merton face open ground, so storms hit ridges, verges and chimneys hard. Damp in old stone, brick or timber walls is slow to dry out, so it pays to find the cause quickly. A written record also helps if you need to explain it to anyone else.
The report works through the roof section by section, from the coverings down to the gutters, each with a short note and a photo. You’ll see the good as well as the bad.
- Place
- Merton (OX25)
- Region
- Oxfordshire
- Prices
- From £150 inc. VAT
- Reports
- A written report with photos, by email
- When we survey
- Weekdays and weekends
- Cover
- PI and public liability insurance
- Phone
- 07833 053749
- Last updated
- 27 October 2026
How the survey changes by roof type
Parapet and box gutters
Some older terraces have a butterfly roof with a valley gutter in the middle. Problems there often show in the rooms on the top floor.
Chimney stacks
We check the outside of the stack and the breast inside, and it is not a flue or gas safety check.
Nearby places to Merton
More services for Merton
What a roof leak investigation looks like in Merton
The wider area around Merton has a long history of building, with Boarstall Tower about 3.7 miles south-east. If you own one of the older houses, expect a mix of original materials and later repairs on the roof, and the council can say whether a home is in a conservation area. Older buildings in west Oxfordshire often have Cotswold stone slate roofs, and some Oxfordshire villages still have thatch. In this part of the South East, older roofs are mostly slate or clay tile and many newer ones concrete tile. Knowing the roof type helps narrow down where water may be getting in.
Take an older house close to Church of St Swithin: water on an older roof tends to find its way in at the lead, the valleys or the chimney. If you look after a shop, office or commercial unit, for example near Bicester Avenue, a leak can close part of a shop or office, so finding the cause quickly matters.
Merton is about 3 miles south of Bicester, in Oxfordshire. Houses, flats, blocks and commercial buildings in Merton can all book roof leak investigations, with a written report and photographs every time. We cover towns and villages across Oxfordshire, large and small. We also survey roofs in Oxford.
Surveys in OX25 work the same way as everywhere else we cover. Close by, we survey roofs in Fencott (1 mile south), Murcott (1 mile south-east), Charlton-on-Otmoor (1 mile south-west), Wendlebury (2 miles north-west) and Lower Arncott (2 miles east). Further out, we also cover Oxford (8 miles south), Bicester (3 miles north), Abingdon-on-Thames (13 miles south), Witney (15 miles west), Thame (11 miles south-east) and Kidlington (6 miles south-west).
Around Merton
We work in homes and buildings around The Old Plough pub. Merton’s nearest station is Bicester Village station, roughly 2.7 miles north of the centre. Other landmarks nearby include Bicester Community Hospital (2.9 miles north) and Bicester Avenue (2.3 miles north). Not far away are Graven Hill and Woodsides Meadow.
Prices for roof leak investigations in Merton
To price your survey, we check:
- Extensions, dormers and garages with roofs of their own
- House, block, shop or office
- How big the roof is
- Chimneys, valleys, parapets and other details
We offer three survey packages: Basic from £150, Standard from £250 and Premium from £400, with VAT included. The price for your roof depends on its size, access and what you’d like to know.
What to tell us when you contact us
A few details help us recommend the right survey and price. When you get in touch, it helps to mention:
- Access details, such as a loft hatch or a shared roof
- The address and postcode of the property
- What made you get in touch
- The style of property, from a terrace to a block
We survey roofs on weekdays and at weekends. To find a date that works for you, call 07833 053749 or send us an email with the address and the days you’d prefer.
Common roof problems in Merton
Flashings are one of the commonest sources of roof leaks. Where a roof meets a chimney, a wall or a dormer, lead or mortar seals the joint. When lead lifts or splits, or a mortar fillet cracks, rain runs straight in.
Here are some of the things we see frequently:
- Leaks that appear only in driving rain
- Water marks that spread in wet weather
- Drips from nail tips in a cold loft
- Stains around a skylight
For landlords with property near Bicester Village station, a tenant living with a leak needs the cause found, not just the stain painted over.
Before booking anyone
- Their drone registration, if they fly one
- Whether they hold professional indemnity and public liability insurance
- What follow-up you get after the report
- What’s outside the scope of the survey
What we do, step by step
After the inspection, everything we found is written up as a written report with photographs, emailed to you. As for time on site, it usually takes roughly 1–2 hours for most houses, and more on a big or complicated roof. For a village or hamlet like Merton, the journey is planned beforehand: let us know about narrow lanes, gates, long drives and where we can park. The roof is looked at from ground level, from windows, from the loft where there is safe access and from the roof where it is safe.
- We help you choose the package that suits the leak.
- A visit is booked for a weekday, Saturday or Sunday.
- The investigation works from the stain back to the roof.
- Where it’s useful and included, we take moisture readings and use thermal imaging.
- You get photos, the likely cause and clear recommendations.
Before we arrive
- Note where any stains or damp appear
- Agree roof access with the managing agent if it is shared
- Move anything stored under the loft hatch
Booking a survey
We confirm the price for your survey before booking, so you know the cost up front. Prices start from £150, including VAT. To book, ring 07833 053749 or email us.
Advice
Questions from Merton
Do you cover smaller places like Merton?
Yes. Merton is within the area we cover, which takes in towns, villages and rural addresses. We survey roofs across London and South East England. Just mention lanes, gates or anything else about the route when booking.
Do you carry out roof surveys in Merton?
Yes. We cover the whole of London and South East England, and Merton is part of that. You can ring 07833 053749 or send us an email with the address and a few details.
Are you insured?
Our cover is professional indemnity plus public liability, and details are available on request.
Can you survey a shared roof?
Yes, if whoever owns or manages the building agrees access. We check the parts we’re given access to, and the report makes that clear.
Will you fly a drone over my roof?
Where it helps and it is safe, yes. Flights depend on the weather on the day and airspace rules, including flight restriction zones near airports. We’re a CAA-registered drone operator.
How do you tell a leak from condensation?
Many apparent leaks turn out to be condensation. Leaks tend to follow wet weather and show in one place, while condensation is often widespread and worst on cold days. We tell you which it is most likely to be.
What does a roof survey cost?
Our price is from £150, including VAT. You’ll know the exact price before booking, based on the roof’s size, access and package. To get a price, phone 07833 053749 or send us an email.
Honest limits
We only report everything that’s safely in view on the day, so there are some things a survey cannot cover:
- A structural engineer’s report
- Putting the leak right
- A promise to find every leak on a single visit
If in doubt, phone 07833 053749 or email us and we will point you to the right survey. What our survey covers.
What this survey covers
- Lead flashings
- Chimney stacks
- The roof space
- Valleys and parapet gutters
- Slate and tile slopes
- Flat roof details
- Rooflights and dormers
For landlords and managing agents
We also survey roofs for businesses and commercial landlords, from shops and offices to industrial units. Bigger roofs take more time, and they’re priced for the size.
Managing agents and residents’ management companies use roof surveys to plan maintenance. The report sets out what needs attention now and what can wait, which helps with budgets and planning.