Damp · Mould · Leak in Merrow
Leak Detection, Trace & Access & Mould Treatment in Merrow
Our engineers find hidden leaks in Merrow homes without tearing them apart, investigate damp and mould properly, and write the report your insurer asks for, across GU1 and GU4.
Get a call back☎ 0800 054 1524WhatsApp us
Fully insured · Non-invasive methods first · Written reports included · London & Surrey
Why Merrow homes get damp, mould and hidden leaks
Merrow is one of Guildford’s larger and more desirable suburbs, running east along the Epsom Road on the slopes below Merrow Downs. Its housing is a real mix: Victorian and Edwardian villas near the old village and St John’s church, big interwar and post-war semis, and a steady supply of newer detached homes. In the period houses we most often trace leaks behind bay windows, valley gutters and chimney breasts, and slow concealed pipe leaks under solid ground floors. In the later housing the recurring issue is condensation mould in extensions and converted lofts that were never ventilated properly. We find out which one you have before anything is opened up.
Extensions, loft conversions and hidden leaks in Merrow
Merrow has a lot of extended and improved family homes, and that is exactly where hidden leaks tend to start. New bathrooms and en-suites bring new concealed pipework, and flat roofs on rear and side extensions are a classic source of slow leaks that show up as a stain or a musty smell months later. We trace the source non-invasively with thermal imaging and moisture mapping, tell you whether it is a leak or condensation, and open up only the spot that matters.
What we do in Merrow
Every job starts with finding the real cause, not painting over the symptom.
Leak detection
Thermal imaging, acoustic and moisture tracing to pinpoint a hidden leak before any wall comes down.
Emergency & burst pipes
Urgent cases are prioritised when water is coming through a ceiling or a pipe has burst.
Trace & access (insurance)
We find and expose the leak and document it for your escape-of-water claim.
Mould treatment & investigation
We find the moisture source, treat the mould and tackle the cause so it is far less likely to return, with a written report.
Insurance-ready reports
Clear, evidenced reports written for insurers, solicitors and managing agents.
Damp & mould surveys
A proper diagnosis (condensation, penetrating or rising damp) so you fix the right thing once.
Moisture mapping & thermal imaging
Calibrated readings and thermal surveys that show exactly where the moisture is, and where it isn’t.
CCTV drainage surveys
Camera surveys that find blockages, collapses and leaking joints that feed damp into a property.
Real investigations by our team
Genuine photographs from DML jobs across London & Surrey, not stock imagery.
How we investigate
Non-invasive first. We open up only when we know exactly where the problem is.
Visual inspection
A methodical room-by-room inspection of the affected areas, inside and out.
Moisture readings
Calibrated moisture meter readings across walls, floors and ceilings.
Thermal imaging
Infrared scanning, where suitable, to reveal hidden moisture and cold spots behind finishes.
Acoustic & tracer gas
Acoustic listening and tracer gas, where suitable, to pinpoint concealed pipe leaks.
Pressure testing
Pressure testing of heating and supply pipework where suitable.
Photos & written report
Photographs, readings and clear findings in a written report you can act on.
Insurance leaks & trace and access
Trace and access may be covered under buildings insurance, depending on the policy. We provide insurance-ready reports and evidence to support the claim. Our Merrow engineers give you the non-invasive trace, the photographs and readings, and a written report you can hand straight to your insurer or loss adjuster.
Insurance, landlords and tenants in Merrow
Reports prepared to support insurance, landlord, agent or housing matters. Trace and access may be covered under buildings insurance, depending on the policy. We provide the photographs, readings and written evidence to support the claim. For landlords and housing providers, our reports are suitable as supporting evidence for housing, landlord or compliance matters. Written workmanship terms apply where relevant.
Book a damp, mould or leak investigation in Merrow
Covering Merrow and the surrounding area. Call free, WhatsApp us, or request a call back and one of our team will get straight back to you.
Get a call back☎ 0800 054 1524WhatsApp us
Insured
Included
Prioritised
Evidence Reports
Terms
Get a call back about your Merrow property
Tell us what’s happening and one of our team will call you back. For urgent problems call 0800 054 1524.
Areas we cover around Merrow
Guildford hub · Burpham · Shalford · Bramley
We also attend Merrow Downs, Merrow Common, Burpham and Boxgrove.
Frequently asked questions: Merrow
Can you find a leak without smashing the house up?
Yes. That is the point of professional leak detection. We use thermal imaging, acoustic listening and moisture mapping to pinpoint it, then open up only the spot that matters.
Our extension has a damp patch on the ceiling. Is it the flat roof?
Often, yes. Flat roofs on extensions are a common source of slow leaks in Merrow. We trace it non-invasively before assuming, because the same patch can also be condensation from a poorly ventilated room.
My mould keeps coming back. Why?
Because mould is a symptom. If the moisture source, whether a leak, damp or condensation, is not fixed, it returns. We find the cause first and set out the fix in writing, so any mould treatment that follows actually lasts.
Will my insurance pay for the work?
Trace and access may be covered under buildings insurance, depending on the policy. We provide insurance-ready reports and evidence to support the claim.
How fast can you get to Merrow?
Merrow is right on the edge of Guildford. Call 0800 054 1524 for the earliest available appointment; urgent leaks are prioritised.
Last reviewed: 27 October 2026. Independent investigation and written reports. Repairs are quoted separately.