Near the water, pipes seep before they burst. We look for the quiet version, locate it properly rather than opening the stain, and give you a fixed price before the repair starts.
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Almost everything written about burst pipes assumes a dramatic failure. Near the beach that is the minority case, and expecting it is why so many leaks here run for months.
The mechanism is chloride. Copper, steel and galvanised iron all form a thin oxide layer that seals the surface and slows further corrosion, and that passive layer is what gives inland pipework its long, uneventful life. Salt strips it away. With no passive layer the corrosion does not stop, and metal on the coast degrades something like five to ten times faster than the same metal inland.
What that produces is perforation rather than rupture: a pinhole that weeps. The industry life for copper is fifty to seventy years, and coastal Sydney sits at the bottom of that band. So on an older Manly house with original runs, the realistic expectation is the lower number.
And it is not confined to exposed walls. Salt arrives on the air through windows, vents and the roof space, settles in cavities and under floors, and holds moisture there. We find corroded pipework in the middle of houses, nowhere near the sea-facing side.
Call and we will talk you through the meter while the van is moving. On a slow leak, the useful call is the one you make when you first notice the stain.
Corrosion here does not split a pipe along its length. It eats through the wall at a point and produces a small hole, which weeps rather than bursts.
So the failure starts slowly and stays small for a long time, which means it hides considerably better than a burst does.
That changes the whole detection question, because you are looking for something that has been running quietly rather than something that just happened.
A stain that dries and comes back. Rust-coloured marks around fittings. A patch of wall or ceiling that is never quite dry even in a dry week.
None of those is dramatic and all of them are easy to attribute to something else, particularly in a house near the sea where damp has other explanations.
Any of them recurring in the same place is worth a look rather than a wipe.
An internal run is not a protected run. Salt travels on the air through open windows and doors, and a house near the beach is open a great deal of the time.
So the pinhole pattern applies to internal pipework here too, not only to exposed external runs.
That is worth knowing, because it means an internal leak on a coastal property is more likely to be corrosion than it would be inland.
Shut every tap and appliance and watch the meter for a quarter of an hour. Movement with nothing running means water is genuinely leaving on your side.
On a pinhole leak the loss can be small, so the fifteen minute version is worth doing rather than the two minute one.
Turn any irrigation off entirely rather than to a rest day, or it will run during the measurement.
Shut the valve on the inlet to the hot water unit and take a second meter reading. It costs nothing and it removes half the property from consideration.
A dial that keeps moving is telling you the cold side. A dial that stops is telling you the unit or the hot line it feeds.
Have a look at the relief valve discharge point too. A steady dribble there reads as a leak and is an inexpensive fix rather than a search.
Water from a slow leak travels. It runs along the outside of a pipe, across a ceiling, down a stud, and surfaces wherever it finally can.
So the visible mark is where the water got out rather than where it got out of the pipe, and the two can be a long way apart.
Opening the stain is quick and satisfying and quite often reveals nothing but wet.
Acoustic listening for the sound a pressurised leak makes, thermal imaging for the heat signature of a hot water leak, and pressure isolation to narrow it section by section.
In that order, after the meter has confirmed there is something to find.
On a small pinhole the acoustic signature is quieter than a burst, which is why the sequence matters and why a systematic approach beats a search.
Most policies cover sudden bursts and exclude gradual seepage. Coastal pinhole leaks are gradual by nature, which puts them on the wrong side of that distinction.
We are plumbers rather than assessors and we will not tell you what your policy covers. What we will do is document the fault, the date it was identified and what was done.
That documentation is worth having regardless of the outcome, and it cannot be produced afterwards.
Corrosion is a condition of the pipework rather than an event at one point, so a first pinhole is information about the run rather than an isolated failure.
That does not mean replacing everything on the strength of one repair. It means knowing where you are.
Two in different places in a year is the installation reporting its condition, and it changes the question from what to fix to what to plan.
Not in the dark, in the rain, on the night it matters. Find the meter, find its tap, and check the tap actually turns on a dry afternoon.
Near the sea they seize more readily than they do inland, which makes checking it worthwhile rather than theoretical.
On a let property, put its location in the house information. Guests cannot be expected to find it.
For all the talk of corrosion, the thing most likely to flood a house here is a braided hose past its service life, and five years is the usual figure.
They fail all at once, at mains pressure, in a cupboard nobody opens, frequently while a property is empty between lets.
They are cheap and quick to replace, and on a let property they are the single most worthwhile preventative job there is.
Close the isolating valves under the vanities, or the stop tap, whenever the property is empty for a stretch. It costs nothing and removes the risk for that period.
The failures that do serious damage are almost always the ones that ran unattended, and a holiday house has more unattended weeks than most.
It is the single most useful habit on this page for anybody letting a property.
Quoted before we start. Indicative 2026 Sydney ranges. Access moves the figure more than the repair does, and a leak found early is almost always the cheaper version of itself.
Waived when you book through this site. Booked another way it is up to $180.
Acoustic and thermal to position it, which on a seeping pinhole is the whole job.
Isolated, contained and repaired where the failure is accessible.
Priced by length and access once we can see how far the corrosion extends.
The market rate for nights and weekends. Told to you before we come out.
Meter, switchboard, lowest tap. On a burst that first minute decides most of the damage, and we walk you through it while the van is moving.
Water off and whatever has escaped contained before any diagnosis begins. Nothing gets quoted while water is still moving.
Acoustic along the line and thermal where hot water is involved. On a slow leak the damp patch and the fault are rarely the same place.
Fixed figure approved first, and what failed photographed and written up, because a gradual leak is a harder insurance conversation.
That is worth a call before it is worth a claim. Turn everything off and watch the meter first, it takes ten minutes and tells us most of what we need.
Call 1300 381 569Turn the water off at the meter, usually at the front boundary, clockwise until it stops. If water is anywhere near a light fitting, a power point or the switchboard, kill the power at the main switch first. Then open the lowest tap in the house, typically an outside garden tap or the laundry, so the pressure in the pipework drains out there rather than into a ceiling. Those three things take a minute and they decide most of what this costs.
It is a tiny perforation through the wall of a copper pipe, and it is the characteristic coastal failure. Salt-laden air strips the protective oxide layer off copper, corrosion keeps going instead of self-limiting, and eventually it punches through at a point rather than splitting the pipe. The result seeps slowly, often for weeks or months, frequently inside a wall or under a floor where nobody sees it until there is a stain or a smell.
The industry figure for copper is fifty to seventy years. Coastal Sydney sits at the low end of that, because metal in a salt environment corrodes something like five to ten times faster than the same metal inland. That does not mean your pipework is about to fail. It means that if the house is of a certain age and nobody has ever replaced a run, the honest expectation should be the lower number rather than the upper one.
That is the classic pinhole presentation. Turn every tap and appliance off and watch the meter: if the dial is still moving, water is going somewhere it should not, and that settles it in ten minutes. Do not assume a hidden leak is small just because nothing has appeared. A pinhole running continuously into a wall cavity or a sub-floor does more damage over three months than a burst does in an hour, precisely because nobody responds to it.
No, and this catches people out. Salt does not need contact with seawater to reach your plumbing. It travels on the air through open windows, vents and the roof space, settles in wall cavities and under floors, then holds moisture against whatever is there. That is why we find corrosion on pipework well inside the building envelope, nowhere near an external wall.
That is the whole point of doing it properly, and on a seeping pinhole it matters more than on a burst. We use acoustic listening along the line and thermal imaging where hot water is involved, which locates the failure rather than the damp patch. On a slow leak the water has usually travelled some distance from the source before it surfaces, so opening the stain is a good way to cut a hole in the wrong place.
Usually the damage is and the pipe itself usually is not. Most policies cover water damage to the building and contents from a sudden burst, exclude the cost of repairing the failed pipe, and, importantly here, exclude damage from a leak that has been seeping gradually rather than bursting. Since gradual seeping is exactly what coastal corrosion produces, acting early is not just cheaper, it is often the difference between a claim and no claim. We document what failed and why, with photographs.
Tell us what you can see, even if it seems minor. A recurring stain, rust around a fitting, or a bill that has crept up are the normal way a coastal leak announces itself.
Fixed price agreed before the repair starts, and the failure documented for your insurer.
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