Damp · Mould · Leak — Chessington
Leak Detection, Trace & Access & Mould Treatment in Chessington
Our engineers find hidden leaks in Chessington’s 1930s and postwar semis without tearing them apart, investigate damp and mould, and write the report your insurer asks for — across KT9.
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Fully insured & qualified · Non-invasive methods first · Written reports included · London & Surrey
Why Chessington homes get damp, mould and hidden leaks
Chessington is a distinct family suburb on the KT9 edge of the borough, and most of its housing is 1930s and postwar semi-detached and terraced homes, with pockets of later development around Hook and the Chessington estates. That fabric brings predictable faults. The interwar and postwar semis typically have cavity walls, shallow or solid ground floors and original render and flashing that have had decades to fail, so we regularly trace leaks under kitchen and bathroom floors, behind chimney breasts and around flat roof extensions. Where families have added rear extensions and loft conversions, the junctions between old and new roofs are a common source of penetrating damp, and cold, busy bathrooms and kitchens produce condensation mould. We diagnose which of these is actually causing your problem before opening anything up.
Leaks in Chessington extensions and family semis
A lot of our Chessington work is on extended family homes, where the trouble sits exactly where the original house meets a newer kitchen, bathroom or loft. Flat roof extensions, poorly detailed flashings and hidden pipe runs in a refitted bathroom are all classic sources of a slow leak that shows up as a stain rooms away. We trace the source non-invasively with thermal imaging, acoustic listening and moisture mapping, open up only the exact spot, and give you a clear written report with photos and readings — the evidence needed to support an insurance claim where one applies.
What we do in Chessington
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
Genuine 24/7 call-outs 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 Chessington 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 Chessington
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 Chessington
Covering Chessington 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
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Get a call back about your Chessington property
Tell us what’s happening and one of our team will call you back. For emergencies call 0800 054 1524 any time.
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Areas we cover around Chessington
New Malden hub · Tolworth · Surbiton · Worcester Park · Kingston
We also attend Hook, North Chessington, South Chessington and Malden Rushett.
Frequently asked questions — Chessington
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.
I have a stain since we extended — is that a leak?
Very likely. The junction between an older house and a newer extension or loft is one of the most common leak points we find in Chessington. We trace whether it is a roof, flashing or pipe issue before any work starts.
My mould keeps coming back — why?
Because mould is a symptom. If the moisture source (a leak, condensation or damp) is not fixed, it returns. We find and fix the cause first, then treat the mould.
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 Chessington?
KT9 is close to our New Malden base, so we can usually attend the same day, and we run genuine 24/7 emergency call-outs for active leaks.