How to Use a Plunger to Unblock Sinks: A Step-by-Step Guide – Updated May 2025
How to Use a Plunger
In a snap overview for fast advice...
A plunger is a simple device, but very effective if used correctly. There are several types available including pump action ones.
- Smear petroleum jelly around the base of the plunger – this helps seal it against the bottom of the bowl.
- Place the plunger over the outlet and run the water so that there is enough in the bowl to cover the base of it.
- Now, holding a wet cloth over the overflow, pump the plunger several times.
- Remove it and see if it’s worked.
- Repeat as necessary.
How to Use a Plunger to Unblock Sinks
Clogged sinks rank right up there with dripping taps and creaky floorboards on the list of everyday household annoyances.
The good news?
You don’t need to call a plumber every time your sink gets backed up—sometimes, you just need a trusty plunger and a little know-how.
In this guide, we’ll break down everything you need to unblock your sink like a pro. Whether you’re a homeowner, a renter, or someone building up their DIY skillset, this is for you.
Grab your tools and let’s get to work—your sink isn’t fixing itself!
What Makes a Plunger Your Best Friend in Plumbing?
When most people think of plungers, they imagine a toilet first. But did you know there are different types of plungers tailored for specific jobs? Here’s a quick rundown:
Types of Plungers:
- Cup Plunger: Classic design with a simple rubber cup. Perfect for flat surfaces like sinks and tubs.
- Flange Plunger: Designed with an extra lip for toilets but can also work on sinks if needed.
- Accordion Plunger: A heavy-duty option for tough clogs, often used in toilets but less popular for sinks.
For a clogged sink, your best bet is a cup plunger. Its flat bottom creates a tight seal over sink drains, giving you the suction power you need to dislodge stubborn blockages.
Preparation: Set Yourself Up for Success
Before you start plunging, it’s important to prep your sink to maximise the plunger’s effectiveness. Here’s what you’ll need to do:
1. Clear the Area:
If the sink has standing water or visible debris, such as food scraps or soap residue, remove as much of it as possible. You don’t want anything interfering with your plunger.
2. Remove the Stopper:
Most sinks have a stopper or strainer over the drain—get this out of the way. Clogs often form below these, and you’ll need direct contact with the drain to work effectively.
3. Add Some Water:
Fill the sink with water until it’s roughly halfway full. Water helps form a seal for the plunger, which is key to creating enough suction to clear the blockage.
Step-by-Step: How to Use a Plunger Like a Pro
It’s time to roll up your sleeves—here’s how to tackle that clogged sink.
1. Position the Plunger Correctly:
Place the plunger flat over the drain. Make sure the rubber cup forms a tight seal all around the opening. This airtight seal is critical; without it, you’re just pushing air around.
2. Create Momentum:
Push down firmly on the plunger handle, then pull up slowly. Repeat this motion in quick, steady bursts. You’re aiming for rhythm here—don’t rush it or go too hard.
3. Keep the Seal Tight:
Resist the temptation to lift the plunger completely off the drain. Breaking the seal decreases suction power and makes the process less effective.
4. Check for Progress:
After 20-30 seconds of plunging, take a break and see if the water begins draining normally. If not, don’t panic—some clogs need more time and persistence.
Troubleshooting: When a Clog Won’t Budge
Let’s say you’ve tried plunging, but the clog still isn’t cooperating. Don’t throw in the towel just yet—there are other techniques to try:
1. Baking Soda and Vinegar
This natural solution can be surprisingly effective! Pour a cup of baking soda down the drain, followed by a cup of vinegar. Let it bubble for 5-10 minutes, then flush with hot water.
2. Drain Snake
If the clog is deeper in the pipe, a manual or electric drain snake can help break up the blockage. These are especially useful for hair and grease clogs.
3. Wet/Dry Vacuum
A wet/dry vacuum set to suction mode can sometimes remove stubborn obstructions. Be sure to seal the hose tightly to the drain for maximum effectiveness.
Time to Call in the Pros?
We’re all about the DIY spirit here at S Fearn, but there are situations where it’s smarter—and frankly, safer—to reach out to the experts. If you notice any of these signs, it’s time to call a pro plumber:
- Recurring Clogs: If your sink backs up repeatedly, it could be a sign of a larger issue like pipe damage or tree roots invading your plumbing.
- Strange Smells or Gurgling Sounds: These symptoms often point to serious problems in your drainage system.
- Standing Water That Won’t Drain: When even a plunger and a drain snake can’t solve the issue, it’s time for professional assistance.
Quick Recap: The DIY Sink Unclogging Process
- Start by preparing the sink: clear debris, remove stoppers, and add water.
- Use a cup plunger to create suction and dislodge the clog.
- Try alternative methods like baking soda and vinegar or a drain snake if plunging doesn’t work.
- Know when to give us a call a plumber for persistent or severe issues.
Tackling a clogged sink doesn’t have to derail your day
With the right preparation and technique, using a plunger is one of the simplest ways to keep your home running smoothly.
And if you're stuck or need expert advice, don’t sweat it. Call S Fearn Plumbing for more handy plumbing tips. Get in touch with our friendly team for professional help. Whether it’s a stubborn clog or a full-blown plumbing emergency, we’ve got you covered.