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Leak Detection South provides professional, non-destructive leak detection in Crawley and across West Sussex. We use advanced diagnostic equipment to find hidden leaks quickly and accurately – without digging or damage. From burst mains to central heating leaks, we locate and repair issues fast. Trusted by homeowners, landlords, and insurers, we’re your local water leak detection specialists in Crawley.

About Leak Detection Crawley

Welcome to Leak Detection South, your trusted specialists for leak detection and water pipe repair in Crawley. If you’re experiencing low water pressure, damp patches, or unexplained increases in your water bill, our experienced engineers can locate the problem quickly and non-invasively.

Using thermal imaging, acoustic listening devices, moisture mapping, and tracer gas testing, we identify leaks under floors, behind walls, or underground without unnecessary damage. Our technology and expertise ensure every leak is found with precision, saving you time, stress, and costly repairs.

We work with homeowners, landlords, letting agents, and insurance providers across Crawley, Horsham, East Grinstead, Copthorne, and Gatwick, offering a complete, insured, and professional service you can depend on.




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    Our Leak Detection Services

    Our Crawley engineers combine years of experience with specialist technology to locate and resolve leaks efficiently.
    Our local services include:

    • Central heating and boiler leak detection

    • Underground and mains water leaks

    • Bathroom, kitchen, and internal plumbing leaks

    • Roof, ceiling, and wall moisture detection

    • Pipe tracing and pressure testing

    • Insurance-approved trace & access reports

    • Water pipe replacement and moling

    We also provide damp surveys and mould prevention advice, ensuring your property stays dry and protected long after the leak is repaired. Whether the problem is in a domestic home, commercial unit, or industrial premises, we’ll find it fast and fix it properly.

    Commom Problems

    We frequently assist customers across Crawley, Copthorne, Pound Hill, Maidenbower, Broadfield, and Tilgate with:

    • Boiler pressure constantly dropping

    • High water bills or meter running continuously

    • Damp patches, stains, or warped flooring

    • Musty odours or visible mould

    • Puddles or wet areas in gardens

    • Warm spots on floors from heating leaks

    • Water ingress through roofs or walls

    Crawley’s mix of older and newer properties means leaks can stem from ageing copper pipes, poor fittings, or ground movement. Our engineers understand local building layouts and plumbing systems, allowing us to find the source of leaks quickly and precisely.

    What to Expect

    Initial Assessment

    We begin with a conversation about your issue — from pressure loss to visible damp — followed by a visual inspection to identify likely problem zones.

    Leak Detection & Testing

    Using acoustic sensors, thermal imaging, tracer gas, and pressure testing, we locate the source of your leak quickly and without damage.

    Findings & Report

    Once identified, we compile a detailed written report including thermal images, moisture readings, and repair recommendations — ideal for insurance purposes.

    Repair & Aftercare

    Where possible, we can carry out or arrange repairs immediately. We’ll also give expert advice on preventing future leaks or damp-related issues.

    leak detection

    Why Choose Us?

    When you’re dealing with a leak, you need expertise, speed, and care. At Leak Detection South, we’ve built a reputation across Crawley and West Sussex for professionalism, precision, and outstanding customer service.

    We know how stressful hidden leaks can be — especially when they start causing visible damage — so we respond quickly, communicate clearly, and always leave your home exactly as we found it.

    Here’s why customers across Crawley trust us:

    • Local specialists – Engineers based near Crawley and familiar with the area’s plumbing layouts.

    • Non-destructive detection – Leaks found without digging or damaging floors and walls.

    • Fast response times – Same-day and emergency callouts available.

    • Detailed, insurance-approved reports – Complete with photos and recommendations.

    • End-to-end service – Leak detection, trace & access, repairs, and aftercare.

    • Clear pricing – Fixed, honest quotes with no hidden extras.

    • Fully trained & insured engineers – Working to the highest professional standards.

    • Proven results – 5-star feedback from satisfied homeowners and local businesses.

    We take pride in offering a reliable, high-quality service — no guesswork, no shortcuts, and no disruption.

    Our Services

    water supply leaks

    Water Supply Leaks

    We locate buried water supply leaks under driveways, gardens, and hard surfaces using tracer gas and acoustic testing for accurate results without excavation.
    water pipe leaks

    Water Pipe Leaks

    From leaking joints to corroded pipes, we use non-invasive testing to identify and repair water leaks with minimal disruption.
    central heating leaks

    Central Heating Leaks

    If your boiler is losing pressure, our specialists locate hidden heating leaks under floors and behind walls quickly and efficiently.
    water leaks and ingress

    Water Leaks & Ingress

    We trace water ingress from roofs, walls, or basements using moisture mapping and infrared technology to prevent further damage.
    mould removal

    Mould Removal

    Our mould removal service tackles the source of the problem, treating affected areas and helping you maintain a healthy, dry home.
    water pipe leaks

    Moling

    Our trenchless moling system allows us to replace or install new underground water pipes without digging up your driveway or garden.

    Client Reviews

    Brilliant service from start to finish. They found the leak under our kitchen floor without any damage. Friendly, professional, and very tidy — highly recommended!

    Sophie KinsellaCopthorne, Crawley

    Fast and reliable. The team arrived the same day, quickly located a leak under our driveway, and provided a full report for our insurance. Fantastic job.

    Liam BrerertonPound Hill, Crawley

    Saved us from major disruption. I thought we’d have to rip up tiles, but their detection equipment found the leak instantly. Very clean, very professional, and worth every penny.

    Amy RawsonCrawley

    Incredibly knowledgeable engineers. They explained the whole process clearly, found a small but persistent leak, and gave us clear recommendations. Great experience.

    Tom HarelsonBroadfield, Crawley

    Areas Covered

    At Leak Detection South, we provide leak detection, pipe repairs, pipe replacement, and mould remediation throughout Crawley and West Sussex.

    We regularly cover Copthorne, Pound Hill, Maidenbower, Broadfield, Tilgate, Pease Pottage, Horsham, and East Grinstead, and often travel further when needed.

    If your location isn’t listed, please still contact us — we’ll be happy to offer a free, no-obligation quote anywhere in the surrounding area.

    • Hampshire
    • Berkshire
    • West Sussex
    • Surrey
    • South London
    • East London
    • West London
    • North London
    • Greater London
    • Kent
    LEAK DETECTION AREAS COVERED MAP
    Leak Detection South Accreditations

    Accreditations

    Moling Experts have various certificates and awards that are industry related. We have displayed some of them here for your peace of mind. We want you to know that you are in safe hands. If you’re in Crawley or the surrounding West Sussex area, contact Leak Detection South today for fast, accurate, and non-invasive leak detection and repair.