What actually causes blocked drains in Melbourne.
A slow-draining sink is a symptom, not the disease. Here are the common plumbing failures causing drain blockages in Melbourne properties — and what to do about each.
PCS VIC · MelbourneA blocked drain is a diagnostic problem
A blocked drain is rarely just an inconvenience—it is often the first indicator of a failing plumbing system.
In Melbourne, understanding exactly why your drain is backing up is critical to preventing thousands of dollars in water damage. We use high-definition CCTV cameras to diagnose the root cause before we quote for the fix.
Tree root intrusion
Established Melbourne suburbs often utilise early PVC or terracotta piping. Roots seeking moisture force their way through microscopic cracks, creating thick webs that crush the pipe.
If the same drain keeps blocking, roots are a very common cause — especially near large trees in the front or back yard.
F.O.G. (fats, oils, and grease)
When oils are poured down sinks, they solidify as they travel through subterranean pipework, slowly strangling the diameter of the line until water can no longer pass through.
Kitchen drains are the most common victims. The fix is prevention: wipe oily pans before washing and never pour fat down the sink.
Pipe collapse
Melbourne’s reactive clay soils expand and contract dramatically. This relentless earth movement can cause underground pipes to sag or break completely, resulting in chronic, repeating blockages.
Treating a blockage with chemical cleaners is putting a band-aid on a broken pipe. You must eliminate the underlying root cause.
Recurring blockage? Let’s diagnose it.
If the same drain keeps backing up, something structural is going on. We’ll use CCTV to find it before we quote for the fix.