What started as a hot water problem turned out to be three separate issues
A Coburg North homeowner initially called us out to investigate ongoing problems with their hot water system. On the surface, it looked like a straightforward repair or replacement job. Once our plumbers arrived and started inspecting the property properly, it became clear there was considerably more going on beneath the surface.
Over the course of a full property assessment, our team uncovered a concealed water leak inside a wall, a non-compliant and leaking gas line, and a sewer system suffering from recurring damage further down the line. None of these issues were visible from the outside, and none of them would have been picked up by simply swapping out the hot water unit and moving on.
Piecing together three separate problems
Rather than treating the hot water fault in isolation, our plumbers worked through the property systematically to understand what was actually causing it.
Here’s what turned up:
- A concealed water leak behind an internal wall, originating from an aged compression fitting
- A leaking, non-compliant gas line that presented a genuine safety concern
- A hot water system that had reached the end of its working life and required full replacement
- Multiple defects within the ageing sewer pipework, identified via CCTV drain inspection, causing recurring blockages and intermittent drainage issues throughout the home
Individually, any one of these would have been a reasonable-sized job. Together, they explained why the homeowner had been dealing with ongoing hot water issues, unexplained dampness, and drainage that never quite behaved the way it should.
Why hidden leaks and ageing gas lines are more common than homeowners expect
A leak behind a wall rarely announces itself straight away. Water can travel along framing timber and plasterboard for some time before any staining, smell, or softness becomes noticeable from inside the home, by which point the surrounding structure has often already absorbed damage. In this case, the source was an aged compression fitting that had simply deteriorated with time, sitting undetected behind a kitchen cupboard.
Gas lines age in a similar way. Fittings and connections that were compliant when installed can drift out of standard over the years, and a slow leak isn’t always obvious the way a burst pipe is. Because of the safety risk involved, any suspected gas issue needs a licensed gas fitter to assess and correct it properly rather than being left or worked around.
Sewer pipework tells a similar story underground. Defects that develop gradually; cracked joints, minor misalignment, gradual deterioration, don’t always cause an obvious blockage straight away. Instead, they show up as the kind of intermittent, hard-to-pin-down drainage issues this property had been experiencing, which is exactly why a full CCTV drain inspection matters when a fault keeps recurring without an obvious cause.
The repair: gas, hot water, leak and sewer works completed together
Once the full scope of the property’s issues was clear, our team carried out a coordinated repair covering all three problem areas.
Hot water and gas:
- Installed a new gas line to safely supply the replacement hot water system
- Installed a new instantaneous hot water system (Rinnai B26), giving the homeowner reliable, long-running hot water designed to perform for up to 15 years
Hidden leak and kitchen repair:
- Exposed the source of the concealed leak behind the kitchen cupboard and timber frame
- Replaced the kitchen waste fittings and renewed the water-damaged cupboard and framing so no further deterioration would occur
- Installed new water isolation valves at two fixtures, giving the homeowner the ability to shut off water to specific areas quickly if an issue ever comes up again
Sewer relining:
- Completed an internal inversion relining covering 10–15 metres of the sewer mainline branch, along with a separate 2-metre patch reline, restoring the damaged sections of pipe from the inside rather than digging up the yard
Drainage and laundry upgrades:
- Removed a section of concrete and excavated to install a new overflow relief gully connection, an important safety feature that gives excess wastewater somewhere safe to surface if the system is ever overloaded
- Installed new isolation valves for the washing machine, allowing water to be shut off to the appliance independently
- Fitted new Posh Bristol chrome washing machine stops to complete the laundry upgrade
Making good once the repairs were complete
With three separate problem areas addressed in the one visit, care was taken to leave the property in good order once the work was finished. The kitchen cupboard and framing affected by the hidden leak were renewed rather than simply patched, and the section of concrete removed to install the new overflow relief gully was reinstated once the connection was complete.
Because most of the sewer repair was carried out through inversion relining rather than a full excavation, the majority of the yard and existing pipework run was left undisturbed; the only excavation required on this job was the smaller, targeted dig for the new overflow relief gully itself.
The results
Following the completed works, the Coburg North property came away with a fully restored plumbing, gas and drainage system rather than a single fault patched over.
The finished project delivered:
- A safely installed gas line and new hot water system, giving the homeowner reliable hot water with an expected working life of up to 15 years
- No further leaks in the kitchen or laundry, with the source of the original hidden leak fully resolved
- New isolation valves at multiple fixtures, giving the homeowner the ability to shut off water quickly in an emergency
- A restored sewer mainline, with the inversion reline and patch addressing the defects causing the property’s recurring blockages
- A new overflow relief gully connection, adding an important safety measure to the property’s drainage system
- Updated laundry tapware and isolation valves, finished with new Posh Bristol chrome stops
Don’t wait until small issues become bigger ones
This job is a good example of why it’s worth having a full property assessment rather than addressing a single symptom in isolation. A hot water fault, a hidden leak and ageing sewer pipework can all be present on the same property at once, quietly affecting each other, without any one of them looking urgent enough to investigate on its own.
If you’re dealing with a hot water issue, a gas smell, unexplained dampness, or drainage that never quite seems to fully resolve, it’s worth having your whole system properly assessed rather than just the immediate symptom. At Fix-It Right Plumbing, our team is equipped to diagnose and resolve issues across hot water, gas, leak detection and drainage in the one visit, so problems like these get fixed properly rather than one at a time. Contact us today if any of this sounds familiar.
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