17 Sep How To Clear A Blocked Drain In Brisbane
And When to Call A Plumber
When how to clear a blocked drain becomes a permanent part of your internet search and a blocked drain has chosen a inconvenient moment to show up. It’s usually the kitchen sink backing up halfway through cooking dinner, or the shower draining slower and slower until you’re standing in ankle-deep water. Before you reach for a hardware store bottle of drain cleaner, it’s worth knowing what actually works, what makes the problem worse, and when the smartest move is to stop and call a licensed plumber. After years of pulling tree roots, grease, and all sorts out of Brisbane drains, here’s what I tell my own customers.
What Causes Most Blocked Drains in Brisbane Homes
Most of the blocked drains we get called out for in Brisbane come down to a handful of repeat offenders. Grease and fat poured down kitchen sinks sets hard once it cools, narrowing the pipe a little more every time. Hair and soap build-up is the usual culprit in bathrooms, especially in older homes with narrower pipework. Tree roots are a big one here too, Brisbane’s older suburbs have plenty of established jacarandas and figs, and their roots find their way into clay pipe joints looking for moisture.
Our clay and older PVC sewer lines around Wacol, Forest Lake, and the wider Ipswich corridor are particularly prone to root intrusion, simply because of the age of the housing stock. If your drain has blocked more than once in the same spot, that’s usually a sign of something structural rather than a one-off blockage.
Try This First: Safe DIY Steps for a Blocked Drain
For a simple, slow-draining sink or shower, there are a few things worth trying before you call anyone. Start with a plunger. A proper cup plunger, not a toilet plunger, creates a seal over a sink or shower drain and can shift a soft blockage with a few firm pushes.
If that doesn’t work, a mix of hot (not boiling) water and a bit of dish soap poured slowly down the drain can help break up grease and soap scum. Give it ten minutes to work before running more water through. A drain snake or a simple wire coat hanger bent into a hook can also pull out hair clogs sitting just below the plug hole in a bathroom drain.
None of these fixes will touch a blockage further down the line, in the main sewer connection, or anything caused by tree roots or a collapsed pipe. If you’ve tried the basics and the drain is still slow or blocked, that’s your cue to stop before you cause damage.
What Not to Do When a Drain Is Blocked
Chemical drain cleaners get reached for a lot, and I’d rather you didn’t. They can damage older pipes, particularly ageing PVC or any pipe that already has a crack or weak joint, and they’re genuinely unpleasant to have splash back at you. They also don’t do much for a blockage that isn’t near the surface, which means you’ve used a harsh chemical for no result.
I’d also steer clear of repeatedly plunging a toilet that isn’t responding. It can push whatever’s blocking it further down the pipe, turning an easy fix into a bigger job. And please don’t try to clear a blockage by removing pipework yourself if you’re not confident doing it. A badly reseated pipe under a sink is a common reason we get called out for a leak on top of the original blockage.
Signs a Blocked Toilet or Drain Needs a Professional
A few signs tell us straight away that DIY has reached its limit. Gurgling sounds coming from other drains when you flush the toilet or run the washing machine usually means the blockage is further down the shared line, not in the fixture itself. Water backing up in a different drain, like the shower backing up when you run the kitchen tap, points to the same thing.
A bad smell that doesn’t go away, water pooling in the yard near where the sewer line runs, or a blockage that keeps coming back in the same spot within weeks are all signs worth getting looked at properly. At that point we’ll usually run a CCTV drain camera through the line. It lets us see exactly what’s going on, whether that’s tree roots, a collapsed section of pipe, or a build-up further along, rather than guessing and digging up the yard.
Why Blocked Drains Keep Coming Back
If the same drain blocks again and again, treating the symptom each time doesn’t fix the cause. Hydro jetting, which uses high-pressure water to clear grease, roots, and built-up debris from the inside of the pipe, often does a more thorough job than a standard drain snake, especially on older sewer lines. Combined with a camera inspection first, it means we’re clearing the actual problem rather than just pushing it along the pipe for a few more weeks.
Because we’re licensed for both plumbing and gas, if a blocked drain investigation turns up something related to a gas hot water unit or an appliance connection nearby, the same team can look at that too, rather than you needing to call someone else in.
If your drains are running slow, gurgling, or blocking in the same spot again and again, we’re happy to come and take a proper look. Give us a call on 0404 823 184 or (07) 3375 4445, and we’ll get it sorted without the guesswork.
Frequently Asked Questions About Blocked Drains
Can I pour boiling water down a blocked drain?
Boiling water can crack PVC pipes and loosen pipe joints, so it’s better to use hot tap water instead. It’s still effective on grease and soap build-up without the risk to plastic pipework.
Is it safe to use chemical drain cleaners regularly?
No. Regular use of chemical drain cleaners can corrode pipes over time, particularly older or already-damaged sections, and they’re not effective on blockages further down the line. We’d rather you called us than relied on them as an ongoing fix.
How do I know if a blockage is in my drain or the main sewer line?
If more than one fixture is affected at once, such as the toilet gurgling when you run the washing machine, the blockage is likely in the shared line rather than one fixture. A CCTV camera inspection gives a definite answer.
How much does it cost to clear a blocked drain in Brisbane?
It depends on the cause and location of the blockage. A straightforward clear is generally more affordable than a job needing a camera inspection or hydro jetting, which is why we always diagnose first so you know what you’re paying for before we start.
Do tree roots in drains need to be removed every time they come back?
Not necessarily removed for good, but they do need managing. Hydro jetting clears roots from inside the pipe, though if the roots keep returning quickly, that can point to a cracked joint that’s worth inspecting with a camera.
With over 30 years in the plumbing industry he provides a level headed and experience approach to all client related work.He is genuine person with a keen interest in family, friends and helping others.
He holds Queensland Plumbing Licence 28840, Gas Licence L31 902, QBCC License 12 654 79, and Building Assets and Services Contractor licence 860 066.
Rich believes in educating clients about their plumbing systems and providing honest advice about when professional help is needed.
He founded Alexander Gas and Plumbing Co in 2013 to provide personal, trustworthy service to Brisbane families and businesses.
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