Professional Water Leak Services find hidden pipe leaks with non-invasive testing rather than guesswork or demolition. A technician confirms water loss at the meter, pressure tests each line to isolate the faulty pipe, then pinpoints the exact spot using thermal imaging, moisture meters, acoustic ground microphones, or tracer gas. Only that one small area is opened for repair. Remseal has used this approach across Sydney for over 43 years on homes, strata buildings, commercial properties and civil projects, and the same team that finds your leak also fixes it, so you're not organising three different trades.
Most people call us after a water bill jumps for no obvious reason. Same household, same habits, bigger number. When that happens, a pipe leaking behind a wall or under the floor is the usual suspect.
Walk around the house and you might spot other clues. Skirting boards that have puffed up or gone a bit brown at the bottom. Tiles that sound hollow when you knock on them. That damp, musty smell in one room. Sometimes you can even hear water moving in the pipes at night when the whole house is asleep.
There's an easy check you can do at the meter:
If the numbers have changed, you've got a leak somewhere, and that's the point where a leak detection Sydney specialist earns their money.
A lot of Sydney is built on clay. It soaks up rain and swells, then dries out and shrinks, year after year, and anything buried in it gets shoved around. Copper and poly pipes under a slab cop that movement constantly. Wall leaks tend to be at a joint or a fitting that's worked loose. Slab leaks are often just a pinhole, which is why they can go unnoticed for months.
The real cost isn't the water. It's what the water does when it's got nowhere to go. Steel inside the concrete starts rusting and swelling, which is what builders mean by concrete cancer. Timber frames rot. Mould gets going in the cavity long before you see it on the paint. And in a unit block, a leak in one apartment can end up as a stained ceiling downstairs and a strata problem for everyone.
Water forced out of a pipe under pressure is noisy, if you've got the right ears. A ground microphone picks it up through the slab or the soil, and we move along the pipe until it's at its loudest.
A thermal imaging camera shows heat differences across a wall or floor. Wet plaster usually shows up cooler than the dry bits around it, and a leaking hot water line shows up warm. The camera can be fooled, so we always back it up with a moisture meter and check how far the wet area actually goes.
Every so often a leak is too small to hear at all. For those, the line gets drained and filled with a harmless hydrogen and nitrogen gas. The gas leaks out of the hole, works its way up through the ground, and a detector at the surface sniffs it out.
Drains get a camera on a flexible cable pushed down the pipe. On the screen you can see cracks, sagging joints and roots that have pushed in looking for water. We also carry little inspection cameras for looking inside wall cavities, and often a single small hole is enough.
Sections of the plumbing get shut off in turn while we keep an eye on the pressure gauge. If it drops on the hot water side, or on the line to the ensuite, we know where to focus.
We trace that pipe with our equipment and mark the leak on the wall or floor.
That marked spot is the only bit we open. Think a few tiles or a small square of plaster rather than ripping out the whole bathroom.
If a hidden leak has pushed your bill up, it's worth asking Sydney Water about its hidden leak allowance. Once the leak has been found and repaired by a licensed plumber or qualified technician, they'll credit half the water usage charge for the worst-affected quarter. A property can get this once every five years. Insurers will want proof too, so our reports spell out where the leak was, how we tested, what got wet, with photos and thermal images, plus what we'd recommend to fix it.
Remseal has been finding and fixing water problems across Sydney for more than 43 years, and after that long you get a pretty good feel for where water ends up. Our Leak Detection Specialists Sydney crew works for homeowners, strata managers, body corporates, builders, insurers and facility managers. Here's why they keep calling us back:
A hidden leak won't fix itself, and every quarter you leave it costs more. The right Water Leak Services will find it without tearing the place apart and give you a report you can hand to Sydney Water or your insurer.
If your meter's moving when it shouldn't be, or there's a damp patch that keeps coming back, call Remseal on 1300 171 091 or book a leak detection specialist in Sydney online.
How do professional plumbers find hidden water leaks without breaking walls or digging?
They pressure test the plumbing to narrow it down to one line, then use gear like thermal cameras, moisture meters, ground microphones, tracer gas and pipe cameras to find the exact spot. That means only a small area gets opened up.
How do I know if I have a hidden water leak under my concrete slab in Sydney?
A meter that moves while nothing is running is the big giveaway. Warm or damp spots on the floor, tiles cracking or lifting, a musty smell and a higher bill are other signs. A slab leak test will tell you for certain.
Can I claim a refund from Sydney Water for a concealed pipe leak?
You might be able to. Sydney Water's hidden leak allowance credits half the water usage charge for the quarter that was hit hardest. It's available once every five years for each property, and a licensed plumber or qualified technician has to find and repair the leak.
Does home insurance cover water leak detection and repair costs in NSW?
It really depends on the policy. Many cover sudden water damage and some cover the cost of locating the leak, but gradual leaks and the pipe repair itself are often left out. Read your PDS and keep your leak detection report handy for the claim.
Can thermal imaging cameras detect leaks inside dry walls or ceilings?
Yes, they can. Wet plaster is a slightly different temperature from dry plaster, and that shows up on the camera. It should always be double-checked with a moisture meter before any repair is recommended.
How much do professional non-invasive water leak detection services cost in Sydney?
Price comes down to the size of the property, how many lines need testing and how hard the pipes are to get at. Houses are usually quicker than strata or commercial jobs. Give Remseal a call and we'll quote for your property.
We have the tools to locate and identify the main cause, and with our extensive experience we provide the best waterproofing solution that lasts.
