Surrey · London and the South East
Roof leak investigation in Merrow, Surrey
Roof leak investigations around Merrow, with findings in writing and pictures to back them up. Weekday and weekend visits available.
- Water through the ceiling under a flat roof
- Water marks that spread in wet weather
- Condensation that looks like a leak
Roof leak investigations in Merrow: local notes
With Clandon Park about 0.9 miles east, Merrow sits in an area with a long building history. 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. Older houses across Surrey often have handmade clay tiles, and many have tile-hanging. A few of Surrey’s oldest buildings have heavy Horsham stone slab roofs. Each of these roof types has its own typical places for water to get in.
If you own a rental within reach of Clandon station, finding the cause of a leak fast keeps a tenant’s home dry and the work focused. If you live near a park like Riverside Park, or anywhere with mature trees, autumn leaves can block gutters and valleys, and blocked gutters overflow and soak walls. Anyone responsible for a site like Bushy Hill Junior School will know that a leak through a large roof is often found some distance from where the water shows inside.
Merrow is about 2 miles east of Guildford, in Surrey. Merrow gets the same service as everywhere else we work: a careful inspection, photographs and a written report. Our area takes in places right across Surrey.
Every address in GU1 and GU4 is covered for roof leak investigations. Streets in the area include Park Lane, Grove Road and Wykeham Road, and we cover them all. If you’re just outside Merrow, we cover Burpham (1 mile north-west), Abbotswood (1 mile west), West Clandon (2 miles north-east), Guildford (2 miles west) and Chilworth (2 miles south). Larger places within reach include Woking (5 miles north), Camberley (11 miles north-west), Epsom (13 miles north-east), Farnham (12 miles west), Ewell (14 miles north-east) and Egham (13 miles north).
Landmarks near Merrow
We work in homes and buildings around St Peter's Catholic School, St Peter's Catholic School and Riverside Park. For rail, the closest station is Clandon station, roughly 1.6 miles north-east of the centre. Well-known places in the area include Guildford Castle (2.1 miles south-west) and Surrey Infantry Museum (0.6 miles north-east). Open spaces near Merrow include St Martha's Hill and Colyer's Hanger and Silent Pool.
How a roof leak investigation works in Merrow
Leaks tend to begin where one part of a roof meets another. Flashings at chimneys and walls, valleys, gutters, parapets and flat roof upstands and outlets are the usual suspects. Each of these is checked in turn and we follow where the evidence leads. Every chimney, dormer and roof light adds more joints to check. Each one is checked from wherever it is safe to see it. We survey flat roof details, lead flashings and slate and tile slopes, and people most frequently book us about water dripping from rafters or underlay and condensation that looks like a leak.
Houses in smaller places like Merrow can stand more in the open, where driving rain gets into any gap at a ridge, verge or flashing. If a leak shows only when the wind is in a certain direction, that’s a useful clue. Tell us when it happens when you contact us. Gutters and downpipes on the exposed side are worth a look as well.
The report is written in plain words, so you do not need to be a roofer to follow it. Photos show what each point refers to, with the urgent items made clear.
- Location
- Merrow (GU1, GU4)
- Wider area
- Surrey
- Prices
- From £150 inc. VAT
- Report
- Written, with photos, emailed to you
- When we survey
- Weekdays, Saturdays and Sundays
- Insurance
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Updated
- 27 October 2026
What a roof leak investigation does not cover
It helps to know what a survey will not do before you book:
- Plumbing leaks that look like roof leaks
- Putting the leak right
- An intermittent leak that shows no trace on the day
If you’re not sure which survey you need, phone 07833 053749 or use the contact form and we’ll give you a straight answer. What a survey covers and doesn’t.
What this survey covers
- Valleys and parapet gutters
- Slate and tile slopes
- Lead flashings
- Rooflights and dormers
- Chimney stacks
- The roof space
- Flat roof details
Roof by roof
Lead flashings
Some roofs have mortar where you’d expect lead. Fillets crack and pull away over time, letting rain run behind the joint.
Flat roof upstands and outlets
Each flat roof relies on its outlets to drain. A blocked outlet leaves water standing, which tests every joint. Outlets and the area around them are looked at.
Rented homes, blocks and businesses
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. Recommendations are set out in order of urgency where relevant, which helps when budgeting.
If you own several properties, surveys can be booked for more than one address. To discuss a number of properties, ring 07833 053749 or use the contact form with the addresses.
What you can safely check yourself
Keep a simple record: dates of leaks, photos from the ground and any work done on the roof. Send it with your enquiry.
The one thing to avoid is getting up close. Slates, tiles, flat roofs and rooflights can give way, and falls from height are serious. That part is for a survey.
What happens on the day
Every visit follows the same pattern: we listen to what’s been worrying you, look at the roof from every safe viewpoint, take photographs as we go and make notes for the report. It typically takes between one and two hours for most homes, though a hard-to-trace leak can take longer. Some parts of a survey depend on the weather, so a visit to Merrow is booked with the forecast in mind: the parts that need calm, dry weather are planned around it.
- 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 is useful and included, we take moisture readings and use thermal imaging.
- The report explains the likely entry point and what needs attention.
Before the survey
- Note where any stains or damp appear
- Tell us about parking before the day
- Clear the way to the loft hatch
Book a survey
Most bookings start with a short call: phone 07833 053749 or drop us an email and we will ask a few questions about the roof. You will have a price before anything is arranged.
Related advice
Also near Merrow
Also in Merrow
Merrow questions
Is Merrow within the area you cover?
Yes. Merrow is within the area we cover, which takes in towns, villages and rural addresses. Our area covers London and the South East. Let us know about access, parking and anything unusual about getting there when booking.
Does a conservation area affect roof work in Merrow?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Can every leak be traced?
Not always, and we will be honest about that. Water can travel a long way, and some leaks only show in particular storms. Where the source is not certain, we list the likely routes in order.
How quickly is the report sent?
It depends on the package: Basic within 48 hours, Standard in 24–48 hours and Premium the same day. The report is emailed to you.
How do you tell a leak from condensation?
Condensation can look very like a leak. Widespread damp on the underside of the roof in cold weather, with blocked vents, suggests condensation. We check the pattern, take moisture readings and tell you which is more likely.
Do I need to be at home?
Not always. An outside-only look can be arranged beforehand, but anything inside needs someone there to give access.
Which days do you carry out surveys?
Surveys can be booked for any day of the week: Monday to Friday, Saturdays and Sundays. Tell us which days suit you as you book.
Useful tips for Merrow property owners
Most of what helps is simple and safe from ground level. A few suggestions:
- Put a bucket under the drip and move valuables
- Move stored items away from the hatch
- Stay off ladders and the roof
- Write down the wind direction and rain when it leaks
Once the work is done, hold on to the report. If the leak returns, it’s a useful record of what was found, which makes the next step quicker.
Keep gutters, valleys and outlets clear, especially in autumn. Many leaks start with a blocked outlet. Use a professional rather than climbing up yourself.