A bathtub that will not drain turns the most relaxing room in the house into the most frustrating one. The good news is that bath blockages are among the most predictable clogs in plumbing. In almost every case the culprit is a mat of hair bound together with soap residue and body oils, sitting within arm’s reach of the waste outlet. That means most bath clogs can be cleared quickly with the right approach, and after 20,000 plus drain clearances we can tell you exactly what that approach looks like.
Start at the waste outlet
Remove the drain cover or pop up plug. Most screw off or lift out with a quarter turn, though some pop up assemblies need the overflow plate unscrewed to release the linkage. Shine a torch down the outlet. In the majority of cases you will see the problem staring back at you, a grey tangle of hair sitting in the first section of the waste. Pull it out with a bent wire hook, a cheap plastic barbed drain strip or long nose pliers. It is not pleasant, but it is quick, and if the water now drains freely you are done in under ten minutes.
Bring in the plunger
If the visible hair is out and the bath still drains slowly, the blockage sits a little further along. Block the overflow opening with a wet cloth, because without a seal there the plunger just pushes air through the overflow instead of pressure through the pipe. Add enough water to cover the plunger cup, then work it with firm, steady strokes for thirty seconds. The combination of pressure and suction breaks up soap and hair masses better than force in one direction alone. Repeat two or three times before judging the result.
Flush with hot water, not boiling
Once water is moving again, follow up with a kettle of hot but not boiling water mixed into a sink of hot tap water, poured steadily down the outlet. Hot water softens the soap and oil residue that glues the next clog together. Avoid pouring water straight off the boil, particularly with plastic waste fittings and older seals, which can distort or fail under sudden extreme heat. A cup of bicarbonate of soda followed by vinegar before the hot water flush adds a fizzing action that helps loosen residue, and unlike chemical cleaners it cannot damage anything.
The one thing we ask you not to do
Please skip the supermarket chemical drain openers. We say this having seen the aftermath hundreds of times. Caustic cleaners rarely dissolve a compacted hair mass. What they actually do is sit on top of the clog in a heated caustic pool, attacking seals, corroding older pipework and creating a hazard for whoever eventually clears the drain properly, which is often one of our technicians. A blockage that resists a plunger will resist a bottle of chemicals too, and the chemicals make every subsequent option worse.
When the clog is not where you think it is
Some bath blockages are not bath blockages at all. If the bath gurgles when the toilet flushes, if the shower or basin backs up at the same time, or if clearing the waste gives you a day of relief before the water slows again, the real obstruction is further down the line in the branch pipework or the main drain. Recurring blockages are a message, and the usual senders are tree roots, pipe damage or a build up beyond the reach of any household tool. This is where our CCTV drain cameras earn their keep, letting us see precisely what and where the problem is before we clear it with high pressure water jetting. No guesswork, no unnecessary digging.
Keep it from coming back
Prevention in a bathtub is wonderfully simple. A basic mesh strainer over the outlet catches the hair before the drain does, and costs less than a coffee. Clear it after each bath, give the drain a hot water flush once a week, and the tangle never gets the chance to form. If your bath is blocked right now and nothing above has shifted it, or if it keeps returning no matter what you do, call Drains Plus. We are available 24 hours across Perth, and if we cannot clear your drain, the service is free.
A note on the tools worth owning, because a five minute fix depends on having them within reach. A small barbed plastic drain strip costs almost nothing, lives in a drawer and removes most hair clogs in one pull. A proper cup plunger, kept separate from the toilet plunger for obvious hygiene reasons, handles the rest. A cheap drain snake or auger adds a metre or two of reach for the deeper waste bends. That entire kit costs less than a single emergency callout, takes up half a shelf, and covers the overwhelming majority of bath and basin blockages a household will ever produce.
Older Perth homes deserve a special mention. Baths in houses from the 1960s and 1970s often drain through original galvanised or copper wastes into clay pipework, and decades of internal corrosion and scale narrow those pipes long before roots or damage enter the picture. If your older bath has always drained lazily no matter how clean the waste is, the restriction is likely built into the ageing pipework itself, and a camera inspection will show whether cleaning, relining or a targeted repair is the right answer.
