--- title: "Plumbing Fault Investigation | Northstar Plumbing" description: "Find the cause of leaks, low pressure or recurring blockages with structured tests and a clear report, then choose the right repair." canonical: "https://www.northstarplumbing.co.uk/services/plumbing-fault-investigation" --- ![Worker in white hard hat inspects insulated pipes while holding a laptop in a mechanical room](/_next/image?url=%2Fapi%2Fmedia%2Ffile%2Fworker-hard-hat-laptop-insulated-pipes.jpg%3Fv%3D1768575104577&w=1536&q=75&dpl=dpl_DEc4fGhEc1SCRZZutzoEsRuDy1CJ) Investigations & Diagnostics # Plumbing Fault Investigation [Contact Us](https://www.northstarplumbing.co.uk/redirect) Plumbing fault investigation is a structured diagnostic service for when you have clear symptoms, but the cause is not obvious. Instead of guessing, the issue is traced methodically so you can make a confident decision on the right repair, with minimal disruption and no unnecessary work. ## What a plumbing fault investigation covers A fault investigation focuses on finding the root cause and setting out practical next steps. It typically includes: - A review of symptoms (when it happens, what’s affected, any recent changes) - Visual checks of accessible pipework, fittings, isolation valves and sanitaryware - Targeted testing to narrow down the fault (for example pressure and flow checks) - Tracing likely routes and identifying weak points or hidden defects - Clear findings, with recommended remedial options and priorities ### When to book an investigation This service is most useful when you want certainty before approving repairs, especially if you are dealing with: - Intermittent leaks, damp patches or unexplained water marks - Low or fluctuating water pressure - Recurring blockages or slow draining after previous clearing - Noisy pipework, air in the system or water hammer - Unexplained drops in system performance in a property you manage ### What happens during the visit You’ll be asked a few focused questions first, then checks and tests are carried out in a logical order to avoid unnecessary strip-out. Where access is limited, you will be advised on the safest, least disruptive options to confirm the cause. If an urgent safety issue is found, immediate steps can be discussed to reduce risk. ### What you get afterwards You receive a clear explanation of what was found and what it means for your property. Recommended repairs are set out in plain English, with priorities so you can plan work sensibly. If follow-on work is needed, the investigation results help ensure the repair is targeted and cost-effective, rather than exploratory. [Contact Us](https://www.northstarplumbing.co.uk/redirect) ## Client Reviews 5.0 Based on 2 reviews - J John M. > We'd been putting up with a heating fault we could not identify ourselves and finally called. Good communication from the office and clear time slot. Thanks—made a stressful situation much easier. - L Laura B. > We got in touch about a heating fault we could not identify ourselves. It's been fine since—no repeat problems. Wouldn't hesitate to recommend them. ## Frequently Asked Questions What issues can a plumbing fault investigation diagnose? It is designed for problems where symptoms are clear but the cause is uncertain, such as intermittent leaks, low pressure or recurring blockages. The aim is to pinpoint the likely root cause and set out the best repair route. How long does a fault investigation take? Timing depends on the symptoms, access and how quickly tests narrow things down. You will be kept informed during the visit if additional checks are needed to reach a reliable conclusion. Will you fix the problem on the same visit? If the cause is found quickly and the repair is straightforward, it may be possible to resolve it then. Where parts, specialist equipment, or further access is needed, you will get clear next steps and options for booking the repair. Do I need to prepare anything before the investigation? If possible, note when the issue occurs and which fixtures are affected, and clear access to cupboards, boxing and stop taps. If you have photos, previous invoices, or details of past repairs, these can help speed up fault-finding. Will the investigation be disruptive? The process is designed to minimise disruption by using targeted checks and tests before any intrusive work is suggested. If opening up is the only sensible way to confirm the fault, you will be talked through the options first. [Contact Us](https://www.northstarplumbing.co.uk/redirect) ## Related Services Complete your experience with these services - Water Loss Investigation [View](/services/water-loss-investigation) - Underfloor Heating Fault Investigation [View](/services/underfloor-heating-fault-investigation) - System Performance Assessment [View](/services/system-performance-assessment) - Noise Investigation (Plumbing & Heating) [View](/services/noise-investigation-plumbing-and-heating) Show more services - Low Water Pressure Investigation [View](/services/low-water-pressure-investigation) - Leak Detection Investigation [View](/services/leak-detection-investigation) - Hot Water Fault Investigation [View](/services/hot-water-fault-investigation) - Heating System Fault Investigation [View](/services/heating-system-fault-investigation) - Heat Pump Fault Investigation [View](/services/heat-pump-fault-investigation) - Drainage Issue Investigation [View](/services/drainage-issue-investigation) - Boiler Fault Investigation [View](/services/boiler-fault-investigation)