Surrey · London and the South East
Merstham Roof Leak Investigation
Not sure what state the leaking roof is in? You can book a roof leak investigation in Merstham and across Surrey, with plain-English findings.
- Leaks below a flat extension roof
- Wet patches high on an inside wall
- Ceiling stains that grow after rain
What we look for on each type of roof
Flat roof upstands and outlets
The upturned edge of a flat roof covering keeps water out at walls. If it’s too low, cracked or poorly dressed, water gets behind it.
Chimney stacks
A stack has several possible ways in for rain. Each is checked from every safe vantage point.
Roof leak investigation in Merstham: what you get
We investigate roof leaks in Merstham and across London and the South East. Surveys are carried out on weekdays and at weekends. The investigation covers inside and out, from the stain to the likely entry points. You get a report with photos and recommendations. If water is coming in now, catch it in a bucket and keep it away from lights and sockets, and then ring 07833 053749 or send us an email. If you’ve noticed staining where a gutter or parapet meets the wall and condensation that looks like a leak, we can find out what’s behind it, on chimney stacks, rooflights and dormers and flat roof details alike.
For a small place like Merstham, the inspection is the same as anywhere: we simply plan the journey and access ahead. Tell us where the water shows, when it appears and anything you’ve noticed outside, along with any repairs done before. If you have photographs of the water coming in, they help as well.
Nothing in the report is left vague: where something needs attention, it says so plainly.
- Where
- Merstham (RH1)
- Wider area
- Surrey
- Prices
- From £150 inc. VAT
- Report
- Written, with photos, emailed to you
- Survey days
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
When you need someone else
Without opening up the roof, some things stay hidden, and that sets some limits:
- Plumbing leaks that look like roof leaks
- Faults hidden behind ceilings or boarding
- An intermittent leak that shows no trace on the day
Not sure which survey suits your roof? You can call 07833 053749 or send us an email and we will tell you before you book. The full list of what we check.
Roofs we survey in Merstham
- The roof space
- Rooflights and dormers
- Flat roof details
- Chimney stacks
- Lead flashings
- Slate and tile slopes
- Valleys and parapet gutters
Nearby places to Merstham
Also in Merstham
Why get it checked now?
A small drip today can be a bigger leak after the next storm. Wind lifts loose slates further and gaps widen. An investigation now gives you time to plan the work. For an older or listed building in a place like Merstham, repairs may need matching materials and consent, so leaving a defect until it’s urgent leaves less time to plan.
Price depends partly on the package: from £150 for Basic, £250 for Standard and £400 for Premium, including VAT. Size, height and access can affect the price too.
Why us?
- We hold a CAA Flyer ID and Operator ID
- Every finding written up with photos
- Clear package prices, with VAT included
- Surveys on any day of the week
Take a look at our cost guide and our case studies.
Roof leak investigations around Merstham
In Surrey, older roofs are often handmade clay tile, with tile-hanging on many upper walls. Horsham stone slab roofs survive on some old buildings in Surrey. Different coverings let water in at different points, which shapes where the search starts. If your home is older, it is worth knowing whether it is listed or in a conservation area before planning roof work. Changes that affect a listed building’s special interest need listed building consent, and councils can also use Article 4 directions to control changes in conservation areas.
Take a building like Merstham Primary School: water through a big roof can travel a long way before it drips, so the search covers more than the obvious spot. If you own a rental within reach of Merstham station, finding the cause of a leak fast keeps a tenant’s home dry and the work focused. For an older house near a landmark such as Church of St Katharine, leaks on older roofs often start at lead flashings, valleys or around old chimney stacks.
Merstham is about 2 miles north of Redhill, in Surrey. Merstham is part of the area we cover across London and South East England. Our area takes in places right across Surrey, from the larger towns to small villages. For surveys nearby, see our Crawley page.
All of RH1 is within our area for roof leak investigations. Streets in the area include London Road North, Shepherd's Hill and Church Hill, and we cover them all. Other places close to Merstham include South Merstham (1 mile south), Gatton (1 mile south-west), Holmethorpe (1 mile south), Hooley (2 miles north) and Netherne on-the-Hill (2 miles north). We also work in nearby towns like Epsom (7 miles north-west), Horley (6 miles south), Ewell (7 miles north-west), Reigate (3 miles south-west), Walton-on-Thames (14 miles north-west) and Caterham (3 miles north-east).
What’s near Merstham
Locally, jobs take us to homes and businesses close to Merstham Park School, Nutfield Marshes and East Surrey College, among other places. Merstham’s nearest station is Merstham station, about 0.5 miles south. Other landmarks nearby include Surrey Fire Museum (2.8 miles south-west) and Bletchingley Castle (2.8 miles south-east). Open spaces near Merstham include South London Downs National Nature Reserve and Colley Hill.
The survey, step by step
We photograph the roof as we go, so the report shows exactly what we saw. We take close-ups from wherever is safe, including by drone where it is applicable and the weather allows. Most surveys take an hour or two for most houses, and more on a big or complicated roof. Around Merstham, older homes can have small or awkward roof spaces, so it helps to know whether there’s a loft hatch and how easy it is to reach. We only go where it’s safe.
- We start with your notes and photos of the leak.
- We examine the damp area and the rooms near it.
- In the loft, we follow any signs of water back towards the roof.
- Outside, we check flashings, valleys, chimneys, gutters and flat roof details from each safe vantage point.
- You receive a report with the likely source, photos and recommendations.
Before we arrive
- Keep pets out of the way during the survey
- Have keys ready for side gates, garages or roof access doors
- Gather any invoices or paperwork from past roof work
Booking a survey
Surveys can be booked for weekdays, Saturdays or Sundays. To arrange a day that suits you, ring 07833 053749 or email us with the address and the days you’d prefer.
Advice
Should I look at the roof myself first?
Watch the gutters in a downpour, from a window or the ground. Overflowing water can point to a blockage or a sagging run.
After strong wind, take a look from the pavement or garden: broken slates or tiles in the garden, gaps along the ridge or loose lead are signs to note. Do not go up yourself.
Your questions about roof leak investigations in Merstham
Does a conservation area affect roof work in Merstham?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. The answer matters most when a change of material is on the cards.
Is Merstham in the area you cover?
Yes. Our area covers London and South East England, and Merstham is part of that. You can call 07833 053749 or send us an email with the address and a few details.
Is this an asbestos survey?
No. We do not sample or test for asbestos. The report may flag materials that could contain asbestos on buildings built or refurbished before 2000, with a recommendation to have a specialist asbestos surveyor check before it is disturbed.
Can a leak be traced on a dry day?
In most cases, yes. Damp materials can be found without rain. For leaks that only happen in certain storms, we report the most likely routes.
How long does a roof leak investigation take?
Allow about 1–2 hours, more where the leak is intermittent or the roof is large. We’ll confirm what to expect when we arrange the visit.
Will you photograph what you find?
Yes. Photos are part of every report, so you can see each point for yourself.
What happens next?
You will receive the report by email, and what you do next is up to you: raise it with a seller, send it to an insurer, brief a roofer or share it with a managing agent.
Surveys for landlords and agents in Merstham
Surveys can also be booked by buyers’ agents acting for a client. The report is emailed, so it can go straight to your client.
Landlords, agents and building managers in Merstham and across Surrey can book any of our surveys. To discuss a property or a block, phone 07833 053749 or drop us an email.