London & Surrey Leak Detection

London & Surrey
Leak Detection

Professional water & gas leak detection across South London & Surrey. Fast, accurate, non-invasive diagnostics for homes and businesses.

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South London & Surrey
Leak Detection

We provide specialist water and gas leak detection across South London & Surrey using advanced, industry-leading technology. Our expert team utilises professional equipment including thermal imaging, acoustic sensors, tracer gas systems, moisture analysis tools and inspection cameras to locate hidden leaks quickly and accurately. Whether the problem is behind walls, under floors, underground or within your heating or plumbing system, we identify the source without unnecessary damage, saving you time, money and disruption.

Water leak detection experts Surrey

Water Leak
Detection

Water leaks are one of the most common hidden issues in homes and businesses. Left untreated, they can cause significant damage and increase costs. Our expert team uses cutting-edge technology—including thermal imaging, acoustic sensors, moisture meters, borescopes, and dye testing—to locate leaks quickly and accurately, often without any invasive work.

We detect leaks in:

  • Pipes behind walls and under floors
  • Bathrooms, kitchens, and utility rooms
  • Roofs, gutters, and drainage systems
  • Heating systems, boilers, and radiators
  • Underground and external plumbing

By acting early, you protect your property, reduce bills, and prevent costly repairs.

Water Detection

Gas leak detection experts Surrey

Gas Leak
Detection

Gas leaks are less common but can be extremely dangerous. Our trained technicians provide fast, reliable detection for homes and businesses across South London & Surrey. Using advanced equipment—including tracer gas detection, acoustic sensors, and pressure testing—we can pinpoint leaks quickly and safely, even in concealed or hard-to-reach areas.

We detect leaks in:

  • Gas pipework in kitchens
  • Gas pipework in boilers
  • Gas pipework in heating systems
  • Central heating

Our safety-first approach ensures your property and occupants are protected, giving you peace of mind while preventing costly or hazardous incidents.

Gas Detection

Plumbing Experts, London

Our Leak Detection Methods

These are the professional water and gas leak detection methods that we use to ensure fast, precise, and reliable results:


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Leak detection with thermal imaging, Surrey & London

Thermal Imaging

Detect hidden leaks using heat and temperature patterns

A thermal imaging camera, also known as an infrared camera, detects the infrared radiation (heat) emitted by objects. All objects above absolute zero emit some infrared energy, which is invisible to the human eye but captured by the camera and displayed as a visible image with colours representing temperature differences.

  • Identifies temperature variations caused by water leaks behind walls, floors, and ceilings.
  • Escaping water is usually warmer or cooler than surrounding materials, making leaks visible.
  • Non-invasive method that doesn’t require damaging surfaces.

Find Hidden Leaks

Acoustic Detection

Identify leaks by listening for water or gas sounds

Acoustic leak detection works by picking up the distinct sounds and vibrations created when water escapes from pressurized pipes. Often, these sounds are inaudible to the human ear, especially if leaks are hidden behind walls or underground.

  • Uses sensitive listening equipment to detect and analyse leak sounds.
  • Effective for locating leaks in pressurized systems and concealed plumbing.
  • Minimizes disruption to your property.
Expert acoustic detection services
Specialised tracer gas experts

Tracer Gas

Pinpoint gas leaks safely with specialized trace gases

Tracer gas leak detection is a precise, non-invasive method for finding even the smallest leaks in plumbing, HVAC, or industrial systems.

  • A safe, specialized gas is introduced into the suspected system.
  • The gas escapes through tiny cracks or imperfections invisible to water or air.
  • Highly sensitive detectors “sniff” the gas to locate the leak accurately.

Tracer Gas Test

Moisture Meter

Measure moisture levels to locate damp or hidden leaks

Moisture meters measure the percentage of water in a material by detecting changes in its electrical properties.

  • Electrodes are inserted into materials like wood, drywall, or concrete.
  • Electrical resistance decreases with higher moisture content, which the meter converts to a percentage reading.
  • Helps identify damp areas caused by leaks and monitor the extent of water damage.

Leak Moisture Test

Leak detection with moisture meter, Surrey & London
Borescope leak experts Surrey

Borescope

Inspect pipes and cavities with a small camera tool

Borescopes use a small camera on a flexible or rigid probe to inspect concealed areas.

  • Captures high-resolution video or images inside pipes and walls.
  • Allows visual confirmation of leaks in hard-to-reach spaces without damaging property.
  • Ideal for plumbing, wall cavities, or other inaccessible areas.

Internal Inspection

Dye Testing

Reveal hidden leaks using safe, colored liquid tracers

Dye testing introduces a brightly coloured, water-soluble, non-toxic dye into a suspected water system.

  • The dye travels with water and appears at the leak point, making it easy to identify.
  • Can use fluorescent dyes that glow under UV light for greater visibility.
  • Effective for plumbing, drainage, septic systems, roofs, and swimming pools.

Dye Testing

Dye testing water leak detection
Effective pressure testing

Pressure Testing

Check pipe integrity and find leaks under pressure

Pressure testing applies controlled pressure to a section of plumbing using water or air/gas.

  • A drop in pressure indicates a leak.
  • Highly effective for detecting hidden leaks in domestic or commercial systems.
  • Helps locate leaks without invasive inspection.

Pressure Testing

Water Sampling

Analyse water to detect contamination or hidden leaks

Water sampling analyses the chemical or microbial composition of water entering or exiting a property.

  • Compares the sample to known water sources to identify the origin of leaks.
  • Useful for pinpointing hidden leaks and assessing contamination risks.
  • Provides insight for remediation and prevention strategies.

Leak Detection Test

Reliable water sampling for leaks

Benefits of
Leak Detection

Why Professional Leak Detection Matters

Discover how professional leak detection can save you time, money, and stress. From protecting your property to improving safety and efficiency, our service helps you address problems before they become costly.

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Prevent structural damage

Detecting hidden water or gas leaks early protects your walls, floors, and foundations from long-term damage.

Reduce water and energy waste

Reduce water and energy waste

Identifying leaks promptly helps you avoid unnecessary water and energy loss, keeping your utility bills under control.

Early problem detection

Early problem detection

Spotting issues at an early stage prevents minor leaks from turning into costly repairs.

Avoid mold and damp risks

Avoid mould
and damp

Quick leak detection reduces the risk of damp and mould, helping maintain a healthy indoor environment.

Home safety assurance

Safety
assurance

Detecting gas leaks early protects your home and family from serious safety hazards.

Top non evasive diagnostics

Non-invasive diagnostics

Our advanced equipment locates leaks accurately without causing disruption to your property.

Time and cost effective repairs

Time and cost
savings

Pinpointing the exact source of a leak allows for faster repairs and lower overall costs.

Book Leak Inspection

What You Receive with Our Leak Detection Service

Full report with cause, damage, and repair

When we complete a water or gas leak detection service, you receive a comprehensive report detailing our findings and recommendations. This includes:

  • Methods used – A full breakdown of every detection method applied, such as thermal imaging, acoustic sensors, tracer gas, moisture meters, borescopes, dye testing, or pressure testing.
  • Findings from each method – Clear documentation of what each tool revealed, including the location, extent, and type of leak or blockage.
  • Final summary – You’ll receive a complete report detailing the cause and location of the leak or blockage, any damage it has caused, and our recommended repairs or remedial actions tailored to your property.

This detailed report allows you to understand the problem fully, make informed decisions, and plan any necessary repairs with confidence.

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Trustworthy leak detection report

Why choose an a.lings plumber?

Whether it’s emergency repairs, leak detection, a plumbing installation or general maintenance, we offer fast, reliable services throughout London & Surrey.

You can trust our qualified plumbers to deliver exceptional workmanship and ensure your home or business plumbing operates efficiently, all at a fair and transparent price.

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EMERGENCY RESPONSE

Our plumbers are on hand for emergencies. If you are experiencing a burst pipe, leak or a potentially dangerous cylinder fault, give our office team a call and we will send someone out ASAP.

Plumbing services response

FULLY QUALIFIED & INSURED

To make sure our work always meets the highest standards, all of our plumbers hold the following qualifications and accreditations; NVQ, City & Guilds, G3 Unvented, WRAS, CHAS, Safe Contractor

Fast response times plumbing

FAST RESPONSE
TIMES

Our dedicated office team always make sure to respond quickly to any enquiries. If your issue is an emergency, we will make sure to prioritise the job to get you back up and running.

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TRANSPARENT PRICING

We know it’s important to deliver quality work at a good value price. Our quotes are quick, straightforward, and transparent, ensuring there are no hidden fees. You can contact our team for any quote queries.

City and guilds badge

City & Guilds Qualified Plumbers
Guaranteed Workmanship

Choosing a City & Guilds certified plumber means selecting a professional with industry recognised qualifications and hands on expertise.

This certification ensures our plumbers are trained in the latest techniques, safety regulations, and best practices, giving you peace of mind that your plumbing system is in expert hands. A City & Guilds qualification signifies technical proficiency, reliability, and high quality workmanship.

emergency leak detection, london

At A.Lings Group, we’re dedicated to providing reliable and professional emergency leak detection services across London.

From the moment you reach out to us, our team ensures a seamless process. From dispatching a qualified plumber promptly to delivering expert diagnosis and repairs. With a commitment to safety, efficiency, and customer satisfaction, we strive to keep your home or business flowing and fuss free. Let us handle your plumbing needs with the expertise and care you can trust.

Request plumbing assistanceStep One

REQUEST OUR
ASSISTANCE

Contact our helpline to report your leak issue. Our friendly team is ready to assist you ASAP.

Drainage professional vanStep Two

PLUMBER
DISPATCHED

A qualified and experienced plumber will be dispatched to your location promptly, ensuring help arrives fast.

Diagnosis and repair drainageStep Three

DIAGNOSIS &
REPAIR

Our expert will detect leaks, provide a detailed report of any issues, and carry out approved repairs.

Plumbing fixed problem solvedStep Four

LEAK FIXED, PROBLEM SOLVED!

Enjoy peace of mind knowing your leak issue has been resolved with safety and reliability in mind.

Leak Detection FAQs

London & South London | A Lings Group Limited

1. What is leak detection?

Leak detection is the process of locating hidden water or gas leaks in your property using specialized equipment, without causing unnecessary damage to walls, floors, or ceilings. It helps identify issues early, preventing costly repairs, reducing waste, and keeping your home or business safe and efficient.

Where We Provide Expert Leak Detection Services

We proudly offer our leak detection services across a wide range of locations in and around London, including Banstead, Carshalton, Caterham, Croydon, South Croydon, Coulsdon, Kenley, Kingston Upon Thames, Mitcham, Morden, New Malden, Purley, Surbiton, Sutton, Thames Ditton, Thornton Heath, Wallington, Warlingham, Wimbledon, Whyteleafe, and Worcester Park. Our coverage extends across key postcode areas such as BN, BR, CR, GU, KT, RH, SE, SM, SW, and TW, ensuring reliable and accessible service for both residential and commercial clients throughout South West London and the surrounding counties.