Retail leak detection across Greater London.
From Beckton and Hayes to Enfield and beyond, we find hidden leaks in shops, supermarkets and retail park units across Greater London's 32 boroughs, usually without digging up the floor or the car park.
Areas we cover in Greater London
Beckton
- Gallions Reach Shopping Park
- Gateway Retail Park
Hayes
- Lombardy Retail Park
Enfield
- De Mandeville Gate Retail Park
Tottenham
- Tottenham Hale Retail Park
Colliers Wood
- Priory Retail Park
Charlton
- Stone Lake Retail Park
Kew
- Kew Retail Park
Map of Greater London
Location data © OpenStreetMap contributors.
Investigating rainwater above a London shop
The owner of a London shop reported ceiling drips after rain, although nothing was actively dripping when the engineer arrived. Moisture readings and thermal patterns guided checks of the ceiling. Lifting ceiling boards revealed damage beneath the concrete above.
The balcony above had damaged waterproofing, missing sealant and damaged brickwork. Tracer gas introduced into the ceiling cavity was detected at damaged balcony areas. The report recommended assessment by a waterproofing contractor and attention to the walls; ADI did not carry out those building repairs. No later waterproofing result or successful retest is recorded.
Leak detection services in Greater London.
Describe the symptoms and agree the investigation scope. The findings guide access and repair decisions.
Water mains & underground
Investigate unexplained water use along supplies beneath yards and floors.
Find out moreHeating & pipework
Test suitable heating circuits to narrow down concealed pressure loss.
Find out moreRoof & ceiling leaks
Trace ceiling water back towards its entry point; roof repairs need a roofing contractor.
Find out moreUnder-floor & slab
Narrow the suspected pipe location before agreeing any opening of the shop floor.
Find out moreWashrooms & staff areas
Separate supply, waste and fitting leaks in washrooms or staff kitchens.
Find out moreDrains & CCTV surveys
Inspect accessible drains for evidence of damage or leakage.
Find out moreDamp & structural ingress
Compare moisture and other evidence to investigate water ingress and damp.
Find out moreMaking an insurance claim?
We write trace-and-access reports insurers and loss adjusters use every week. Get the evidence first.
Insurance claimsEquipment used on retail sites in Greater London
Moisture meters first
Mapping how far water has travelled separates a leak from condensation and shows whether the wet area is still spreading, which decides whether anything needs opening at all.
Thermal imaging over tiled floors and suspended ceilings
A hot-water or heating leak leaves a temperature difference readable through tiles, screed and ceiling tiles, without lifting them during trading hours.
Acoustic listening on supplies under hard surfaces
Shop supplies often run beneath a tiled floor, a service yard or a car park, where pressurised water escaping can be heard from the surface.
Borescope inspection behind fitted units
Counters, chillers and stud walls can be inspected through a hole the size of a coin rather than being stripped out.
Drain cameras in service yards
Gullies and interceptors behind a parade or a retail park unit are surveyed from the inside, which distinguishes a drainage fault from a supply leak.
Pressure testing to isolate the circuit
Confirming which circuit is losing water before anyone starts looking avoids opening the wrong part of a trading area.
The equipment itself
Moisture meter, reading how far water has travelled through a wall. 
Thermal camera, showing hot pipework against a cooler floor. 
Ground microphone, listening for a supply leak under paving. 
Borescope, inspecting pipework behind a unit without removing it. 
Drain camera, surveying a chamber from the inside.
How a survey runs and the equipment used are the same wherever the shop is: see how it works and the equipment. For the premises types covered, see retail premises, and for trace-and-access evidence, insurance claims.
- 25leak detection engineers
- 4.7Trustpilot score, rated Excellent
- £5mpublic liability cover
- 10+years finding leaks
Rated Excellent on Trustpilot.
1,600+ reviews from homeowners, businesses and insurers across the UK, including 1,000+ five-star ratings.
Read the reviewsSelected excerpts from five-star reviews of ADI’s wider service across the UK.
I recently used ADI Leak Detection to investigate and repair a water leak at my property, and I couldn't be happier with the service received.
Dan · Read full review on Trustpilot Kristof was very professional. Explained well what he was going to do at the start and how he expects the job to go.
ryan warman · Read full review on Trustpilot
Coverage questions for Greater London.
What if the shop is dry when the engineer arrives?
Explain when rain and indoor dripping occur, and share dated photographs if available. On this London shop visit there was no active dripping on arrival, but moisture measurements and access above the ceiling still informed the investigation.
Will you need access to the premises above the shop?
That depends on the suspected route. This investigation involved both the shop ceiling cavity and the balcony above. Arrange any relevant access with the responsible occupier or property manager before the visit.
Does locating an entry route include repairing the balcony?
No. This report recommended assessment by a waterproofing contractor and attention to damaged walls. ADI did not carry out those building repairs or record a subsequent retest.
Do you cover a London shop outside the listed retail parks?
The listed parks are examples, not the limit of coverage. Call with the shop’s postcode, the symptoms and any restrictions on access so the team can confirm suitability and availability.
Call about a leak in Greater London.
Give us the site address and what you have noticed, and we will confirm the engineer and a time for the visit.
Engineers across England, Scotland and Wales. £5 million public liability insurance.