What to Do When Your Drain Is Blocked?

by | Feb 12, 2026 | Cleaning and Maintenance, Plumbing | 0 comments

“The sink is overflowing again,” Mark shouted from the kitchen. Sarah walked over to see the stagnant, grey water. 

“Have you used the plunger yet?” she asked. He shook his head while looking for a towel. They both knew the weekend plans were officially ruined.

You tried to ignore the rising level. The drain remained completely stubborn despite your best efforts. 

We have all seen those “magic” plumbing hacks while scrolling through social media, but experienced plumbers see exactly what happens when those tips go wrong.

While a viral video might make it look easy, local plumber from Brisbane Drain Cleaning points out that mixing random household products can trigger nasty chemical reactions that cook your pipes from the inside out. 

Before diving into the mechanical solutions, it is important to understand that not all clogs are created equal. 

What’s Really Behind That Stubborn Clog?

Not every clog has the same cause, so knowing what you’re dealing with helps you fix it faster.

If your kitchen sink drains slowly with a foul, rotting odour it is from a buildup of organic kitchen fats and food particles that have solidified over time. These materials harden over time and restrict the pipe.

A sudden blockage after a shower is caused by hair tangled with soap scum. This type of clog needs to be pulled out, not dissolved.

If you jump straight into aggressive repairs without a plan, you risk turning a simple sink blockage into a full-blown plumbing emergency. Below are the steps on what to do when your drain is blocked.

Check Your Other Taps

If it is just one sink, you are dealing with a minor clog that you can probably fix yourself. If every drain in the house is slow or gurgling, the problem is deep in your main pipes and you should skip the DIY and call for professional help immediately.

Scoop Out the Extra Water

You cannot fix a drain if it is buried under a pool of dirty water. 

Grab a small bucket and scoop the water into a separate container until you can see the drain hole clearly. This stops the mess from overflowing onto your floor and lets you see if something obvious, like a bottle cap or a clump of hair, is sitting right at the top.

Use the Plunger the Right Way

Grab your plunger and make sure it covers the whole drain hole to get a tight seal. If you are working on a sink, try blocking the overflow hole with a wet rag so the air doesn’t escape. 

Give it about ten to twenty strong pumps to try and push the blockage through with water pressure.

Use Baking Soda and Vinegar

If the plunger fails, stay away from those harsh, expensive chemicals that can eat through your pipes. 

Instead, pour half a cup of baking soda down the hole, followed by half a cup of white vinegar. Let it bubble and fizz for about fifteen minutes to break up the grease, then pour a kettle of hot water down to flush it all away.

Following these steps helps you handle the mess without breaking a pipe or making the problem more expensive to fix later.

The Risks of Using Chemical Cleaners on Your Pipes

While it is tempting to grab a bottle of “magic” liquid from the supermarket shelf after your DIY steps fail, these chemicals often do more harm than good. 

Most of these products rely on harsh reactions that generate intense heat, which can warp or melt modern PVC pipes if the liquid gets trapped against a stubborn clog. 

Types of Cleaners Risk
Caustic  Creates a lot of heat, which can damage your pipes.
Oxidizing  Weaken the glue and seals in your pipe joints.
Acid  Ruin the stainless steel sinks and older metal pipes in a matter of seconds.

These chemical breakdowns help you realise that while they might offer a five-minute fix, the long-term cost to your plumbing infrastructure isn’t worth the gamble.

Why Some Blockages Keep Coming Back

If you find yourself plunging the same sink every few weeks, you are just poking a small hole through a much larger mess. 

Recurring clogs are a sign of “fatbergs”, thick layers of grease and oil that have solidified against the pipe walls or invasive tree roots that have cracked the line.

These obstructions act like a magnet for hair and soap scum, causing the drain to narrow again almost as soon as you clear it.

In these cases, a temporary fix won’t cut it, and you’ll need a professional inspection to see if the pipe itself needs a deeper structural repair.

Know When to DIY and When to Call for Help

Dealing with a stubborn drain is just part of homeownership. While it is great to have a go at fixing things yourself, knowing when to put the tools down is what keeps a minor problem from turning into a massive headache. 

Our local pipes deal with everything from heavy summer storms to thirsty tree roots, so there is no shame in needing a bit of extra help. Keeping a close eye on your drains today means you can spend your weekends enjoying the Brisbane sunshine instead of mopping up a mess in the kitchen.