Can one site visit cover both drain defects and mains pipe leaks?

Full transcript

George and Dave in conversation. Every word of the episode, exactly as recorded.

George

Welcome back. I'm here with Dave from ADI Leak Detection, leading leak detection specialists across the UK, who's here to answer your questions and provide expert leak detection advice. Today's question is one we hear from homeowners who've got damp patches and slow drains at the same time, can a single site visit actually cover both drain defects and a mains pipe leak, or do you need two separate appointments?

Dave

Good question, and the short answer is yes, one visit covers both. A drainage survey and an acoustic leak detection survey target completely different parts of your water system, so the two don't get in each other's way.

George

Right, so just to make sure I've got this straight, when we say drainage survey and acoustic survey, those are two distinct pieces of kit, two distinct jobs?

Dave

Exactly. A drainage survey uses a CCTV camera that travels through the drain runs, we're looking at the inside of the pipe for things like root ingress, collapsed sections, displaced joints, or blockage build-up. Acoustic leak detection is completely separate. That method uses sensitive listening equipment to pick up the sound signature of pressurised water escaping from a supply pipe.

George

So the acoustic side is specifically for the supply, the pipe that brings clean water into the property?

Dave

That's it. Acoustic leak detection pinpoints hidden water leaks on pressurised pipework, your mains supply, your central heating feeds, your cold water service pipe running under the floor or through the ground. Drainage is gravity-fed and unpressurised, so acoustic equipment won't pick up a drain fault. You need the camera for that.

George

And homeowners quite often have both problems at once, I imagine? It's not unusual to have a slow drain and a damp floor happening together?

Dave

It happens regularly. A property might have a failed drain joint that's been letting groundwater in, and separately a small supply pipe leak under the slab. The symptoms, damp, mould, high water bills, can look similar on the surface, and that's actually why running both surveys together makes sense. You're not guessing which system is responsible.

George

How does ADI structure that kind of combined visit in practice? Does one survey have to happen before the other?

Dave

We tend to run the acoustic survey first. Acoustic leak detection relies on listening for the pressure signature of escaping water, and that's easier to do before any equipment disturbance on site. Once we've traced the supply pipe leak and marked it up, the drainage engineer can get the CCTV camera into the drain runs without compromising the acoustic data.

George

That makes sense, keep the quiet work quiet. What does the CCTV drainage survey actually show the engineer? What are they looking for specifically?

Dave

The camera feeds live footage back to a screen so the engineer can see the condition of the pipe wall, the joints, any deformation or cracking. Root ingress shows up clearly, tree roots find their way through hairline joint failures and then spread inside the pipe. Displaced joints, where two sections have moved apart, are a very common find on older clay drainage systems.

George

And all of that gets documented, I assume? The homeowner walks away with a report covering both?

Dave

They do. ADI produces a written report with the acoustic findings, the leak location marked on a site plan, and a separate drainage survey report with CCTV footage and a condition assessment of each drain run. That means the homeowner, or their plumber, or their insurer, has everything they need to plan the repair without a second site investigation.

George

That's the bit that really matters for a homeowner, isn't it, not having to book two separate companies and have two separate days of disruption.

Dave

Exactly, and it's not just convenience. When both surveys are done on the same visit, the engineers can cross-reference findings. If the acoustic survey locates a supply pipe leak close to a drain run that the CCTV shows has a displaced joint, that's useful context, it tells the repair team what they're likely to find when they excavate.

George

Dave, that's really clear, thank you. So to summarise for anyone listening: one site visit, two surveys, two different detection methods working on two different parts of the system, and one combined report at the end. If you've got any reason to suspect both a drain issue and a supply pipe leak at your property, ADI Leak Detection is among the most experienced specialist teams in the UK for exactly this kind of combined investigation. Thanks for listening.

How this episode was made. This episode was produced using AI-generated voices and script, based on real leak detection questions and the working knowledge of ADI Leak Detection engineers. More about how the podcast is made.