How Can I Unblock My Sink? Practical Steps from a Drainage Expert
Blocked sinks are a pain, but you can tackle most issues yourself
It’s a scenario almost everyone has experienced: you’re washing up, and suddenly the dirty water just won’t drain away. Whether it’s the kitchen or bathroom, a blocked sink can throw your routine out of sink - pardon the pun!
The good news? Most sink blockages can be sorted quickly with a bit of know-how and the right approach.
Here’s our practical, step-by-step guide to help you get things flowing again - without the drama and without having to call us.
1. Clear Out the Obvious
First of all, check if there’s anything visible causing the blockage. Sometimes, a build-up of food scraps, hair, or soap scum right at the plughole is the culprit.
If you spot anything, pop on some gloves and remove it. It’s not glamorous, but it’s often the simplest fix.
2. Boiling Water: Old-School Trick
Once you’ve cleared the surface, try pouring a kettle of boiling hot water down the drain.
This can help dissolve grease or soap that’s built up just out of sight. Take care if you have PVC pipes: the water cool a little first to avoid any damage to your pipes.
3. The Plunger Method
If water’s still not moving, grab a plunger.
Tip: make sure there’s enough water in the sink to cover the plunger’s rubber cup.
Position it over the plughole, then push down and pull up sharply a few consecutive times. You should feel some resistance and, if you’re lucky, hear the satisfying gurgle of a cleared blockage.
4. Baking Soda and Vinegar
Looking for a chemical-free option? Pour about half a cup of bicarbonate of soda down the drain, followed by a cup of white vinegar.
You’ll get some fizzing - let it sit for 10–15 minutes, then flush with hot water. This combo is great for breaking down organic muck.
5. Check the U-Bend
If none of the above works, it’s time to get a bit more hands-on. Place a bucket under the sink’s U-bend (the curved pipe underneath), then carefully unscrew it.
Be ready for some water to spill out! Clear any gunk you find, screw it back on, and test the flow.
When to Call the Pros
If your sink’s still blocked after all this, the problem might be way further down the pipes or in the main drainage line. That’s when it’s best to call in a drainage specialist.
Persistent blockages can signal bigger issues, and a professional will have the tools to sort it quickly and safely.
Final Tip: Prevention is Key
To avoid future blockages, avoid putting fat, coffee grounds, or food scraps down the kitchen sink, and use a hair catcher in the bathroom.
A little prevention goes a long way!
Blocked sinks are a pain, but with these steps, you can tackle most issues yourself.
And if you ever need a hand, you know where to find a friendly drainage expert ready to help.
Geoff Ward
