Can You Plunge a Sink? Yes - Here's How
When you have a clogged sink, what can you do about it? Can you plunge a sink? Yes, and it’s often the best option. Things like pouring hot water down the drain, fishing out the object with a hanger, or using Drain-O can work, but they can also damage your sink. Learn more about how to use a plunger on a sink so you can quickly solve drain problems.
Can You Use a Plunger on a Sink?
Yes, you can absolutely use a plunger on a sink. Just make sure you're using the right type. A flat-bottomed cup plunger works best for sinks (unlike the flanged plungers designed for toilets).
Plunging is most effective for soft blockages, like food scraps or grease buildup in the P-trap. If you suspect a clog deeper in the drain line, you may need to move on to a drain snake.
If it’s your kitchen sink that’s clogged, you may want to try other kitchen maintenance tips in addition to using a plunger.
What You’ll Need Before You Start
- Cup plunger (learn how to choose the right plunger)
- Rubber gloves
- Old towels or rags
- Bucket (optional)
- Drain stopper or duct tape (for double sinks)
Step-by-Step: How to Plunge a Sink
When you’re ready to try a plunger for your clogged sink, here are the steps you’ll want to follow.
1. Prepare the Sink
- Clear out any dishes or debris.
- If you’re working with a double-basin kitchen sink, block off the other drain with a stopper or duct tape. This helps create suction.
2. Create a Strong Seal
- Place the plunger over the drain opening, so it completely covers it.
- Add a little water if needed to help the plunger form a tight seal.
3. Plunge with Short, Quick Thrusts
Before you start, make sure you know how to use a plunger.
- Hold the handle vertically and push down with controlled force, then pull up slightly.
- Repeat this motion rapidly for 15 to 20 seconds.
4. Test the Drain Flow
- Remove the plunger and run a little water.
- If it drains freely, the clog is cleared. If not, continue to the next step.
5. Repeat if Necessary or the Move to Next Step
Try plunging again a few times. If the clog won’t budge, it may be time to try a drain snake or auger. For more options, check out our guide to unclogging drains.
Why Isn’t My Sink Unclogging After Plunging?
If the water still doesn’t drain, the clog might be too far down the line or caused by something that can’t be loosened by pressure alone. Other possible causes include:
- Grease buildup that hardened in the pipe
- Debris stuck in the P-trap
- Venting issues that limit drainage
- Partial blockages caused by damaged pipes or roots
If you’ve already tried plunging and snaking to no avail, it’s time to call a plumber. Roto-Rooter is at your service 24/7 for any problems you might have — even if you’ve backed up your kitchen sink at 3 a.m. after making a late-night snack on Christmas Eve.
Frequently Asked Questions
What type of plunger is best for sinks?
A flat-bottomed cup plunger is the best plunger for a kitchen sink. Avoid flange-style plungers, which are made for toilets and won’t form a proper seal on flat surfaces.
Is it safe to plunge the kitchen sink?
Yes, but only if you plunge gently and avoid using harsh force. Be careful not to damage pipe joints or fittings under the sink.
Can plunging sinks damage pipes?
Plunging won’t damage pipes if done properly. But if you notice leaks or strange noises after plunging, stop and inspect the plumbing below the sink.
Can you use the same plunger for the sink and toilet?
No. Toilet plungers have a different shape and should never be used in sinks for sanitary reasons. Keep separate plungers for each use.
Why isn’t my sink unclogging after plunging?
Stubborn clogs may require more than just a plunger. You might need to use a snake plunger for the sink or call in a professional if plunging doesn’t work.
Using a Plunger for Sink Clogs vs. Calling a Pro
Does a plunger work for sinks? Usually, but when it doesn’t do the trick, Roto-Rooter can help. Our licensed plumbers can diagnose and clear stubborn clogs, inspect your drain lines, and get your sink flowing freely again. Don’t wait until a small clog becomes a big problem. Call us today to schedule your appointment.