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Leak Detection

Leak Detection Services in London

Accurate, Non-Invasive Leak Detection You Can Trust

At Drainage & Leak Detection Experts, we specialise in locating hidden water leaks quickly, safely, and accurately without the need for unnecessary damage or disruption.
Using the latest technology, our qualified engineers pinpoint the exact source of leaks in water mains, central heating systems, underfloor pipes, ceilings, and drains.
Whether you’re dealing with a sudden leak, drop in boiler pressure or ongoing damp issues, we provide reliable solutions that protect your property and prevent costly repairs.

Water Mains Leak Detection

Pinpointing Leaks Before They Escalate

Water main leaks can waste thousands of litres of water and cause serious structural damage if left untreated. Our specialists use tracer gas and a borescope camera to detect underground and concealed leaks quickly with no digging required.

Key benefits:

• Fast, accurate detection of external water main leaks

• Prevents unnecessary excavation or property damage

• Saves you money on water bills and future repairs

Central Heating Leak Detection

Stop Heat Loss and Keep Energy Bills Down

A small leak in your central heating system can lead to pressure drops, inefficiency, and rising costs. Our engineers use thermal imaging cameras and tracer gas testing to find even the smallest leaks, whether they’re behind walls or under floors.

Why homeowners trust us:

  • Detects leaks without dismantling your system
  • Protects your boiler and central heating components
  • Suitable for both wet and dry heating systems

Underfloor Leak Detection

Find Leaks Without Damaging Your Flooring

Leaks under floors can be hard to detect until visible damage appears. We use tracer gas and a borescope camera to identify underfloor leaks accurately, allowing repairs before the issue becomes severe.

What makes our service different:

  • No floor lifting or drilling required

  • Works on both water and heating systems

  • Minimal disruption with maximum precision

Underground Leak Detection

Non-Invasive Solutions for Hidden Leaks

Underground leaks in pipes or drains can cause ground movement, dampness, and flooding. We use tracer gas combined with pressure testing to locate underground leaks without excavation.

Benefits:

  • Detects leaks under driveways, gardens, and concrete

  • Prevents long-term structural damage

  • Detailed reports for insurance or repair planning

Ceiling Leak Detection

Prevent Water Damage to Your Home’s Interior

Ceiling leaks are often caused by plumbing faults, roof issues, or upstairs bathroom leaks. Our leak detection engineers identify the exact source using thermal imaging and moisture mapping, ensuring the problem is fixed quickly before more damage occurs.

Advantages:

  • Non-invasive moisture tracing

  • Fast, accurate identification of leak source

  • Protects ceilings, walls, and property interiors

Drain & Waste Leak Detection

Locating Leaks in Your Drainage System

Leaks in your waste or drainage system can lead to damp smells, damage, and health risks. Using CCTV drain cameras and borescope camera equipment, we locate leaks efficiently and provide clear repair recommendations.

Why choose us:

  • Advanced CCTV drain inspection

  • Clear video evidence and reports

  • Solutions for both residential and commercial drains

Damp & Hidden Leak Detection

Protect Your Property from Long-Term Damage

Persistent damp patches or mould can be signs of hidden leaks. We use moisture mapping and thermal cameras to track moisture at its source, whether it’s from plumbing, roofing, or drainage. Early detection helps prevent costly structural or health issues.

Benefits:

  • Accurate source identification

  • Prevents mould and internal wall damage

  • Comprehensive inspection with visual evidence

Why Choose Drainage & Leak Detection Experts?

• 10+ years of experience in residential and commercial leak detection

• Fully qualified, insured engineers

• Non-invasive, high-tech methods

• Transparent pricing — no hidden fees

• 24/7 emergency service across London

Leak Detection FAQs

How do you find hidden leaks without damaging my property?
We use advanced, non-invasive leak detection methods such as thermal imaging, borescope camera, and tracer gas testing. These technologies allow us to pinpoint the exact source of the leak behind walls, under floors, or underground, without drilling, digging, or causing unnecessary damage.
Most leak detection inspections take between 1 to 3 hours, depending on the size of the property and the complexity of the leak. Our engineers work efficiently to locate the issue accurately, providing a detailed report and recommended next steps before any repair begins.

Common signs include:

  • Damp patches on walls, ceilings, or floors

  • Unexplained increase in water bills

  • Reduced boiler pressure or heating issues

  • Musty odours or mould growth

  • The sound of running water when all taps are off

If you notice any of these, it’s best to book a professional leak detection survey before the problem worsens.

Yes — in most cases, we can carry out on-the-spot repairs once the leak has been located. For more complex or larger leaks (like those involving underground mains or central heating systems), we’ll provide a clear, itemised quote and discuss your best repair options before proceeding.
Absolutely. We cover all areas of London, including Central, North, South, East, and West London, as well as nearby boroughs. Our engineers can usually reach you within 30 to 60 minutes for emergency call-outs.
Yes, we do. After every leak detection inspection, we provide a detailed written report including photos, video footage (if applicable), and a clear description of the issue. These reports are accepted by most UK insurance providers to help speed up your claim process.

We detect all kinds of leaks, including:

• Water mains leaks

• Central heating system leaks

• Underfloor heating leaks

• Underground

• Ceiling leaks

• Drain and waste pipe leaks

• Damp and moisture-related leaks

Our engineers are trained to work on both domestic and commercial properties, ensuring accurate results in every situation.

Leak detection costs vary depending on the size of your property and the complexity of the issue. However, we offer transparent, fixed pricing with no hidden fees. You’ll receive a clear quote before any work begins, so you always know what to expect.

Yes, damp is often a sign of a hidden leak. Our specialists use moisture mapping and thermal imaging to identify the cause of dampness quickly and accurately. Once the source is confirmed, we provide solutions to stop the leak and prevent further damage or mould growth.

We’re one of London’s most trusted leak detection specialists, with over 10 years of experience, fully qualified engineers, and 24/7 emergency availability. We use cutting-edge technology, provide transparent pricing, and deliver fast, reliable results every time, all with minimal disruption to your property.

Book Your Leak Detection Service Today

Don’t let a hidden leak damage your property or your peace of mind.
Our expert team is available 24 hours a day, 7 days a week to respond fast and fix the problem properly.

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