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How to Unclog a Bathroom Sink Drain

How to Unclog a Bathroom Sink Drain | 5 Star Best Plumbing

A clogged bathroom sink drain can be a major inconvenience in our daily routines. Worry not, because we have prepared a comprehensive guide on how to unclog your bathroom sink drain. With a few simple tools and techniques, you’ll have your hand basinback in working order in no time. So, let’s dive right in and learn how to tackle that pesky clogged hand basin!

Things I Need to Get Started

Before you get into action, it’s essential to understand the time, tools, and costs involved in unclogging a restroom basin pipeline.

How much time does it take?

The time required to unclog a hand basin drain varies from 10 minutes to a few hours, depending on the level of blockage and the technique used.

Which tools do I need to use?

Tools for Unclogging a Bathroom Sink

Some common tools used for unclogging restroom basin pipelines include a Zip-It tool, a wet-dry vacuum cleaner, a plunger, a drain snake (or drain auger), a drain bladder, and some DIY supplies like vinegar and baking soda.

How much will these supplies cost?

The cost of these supplies can range from a few dollars for a Zip-It tool or plunger to around $50 for a drain snake or wet-dry vacuum. Keep in mind that hiring a professional plumber will likely cost more, but may save you time and ensure the job is done correctly.

6 Causes of Clogged Bathroom Sink Drains

Clogged Drain by Hair


Hair is one of the common reasons why sink drains get clogged. This happens as hair can easily become entwined and stuck inside the drain.

Soap Scum Clogged Drain

Soap scum 

Soap and hard water can combine to form soap scum, which can build up and clog your sink drain over time.
Dirt & Debris Clogged Drain

Dirt and debris

Dirt, debris, and other small particles can accumulate and create a clog in your sink drain.

Clogged Drain Caused by Toothpaste & Care Products

Toothpaste and other personal care products

Toothpaste, shaving cream, and other personal care products can stick to the sides of your sink drain, causing a blockage.
Clogged Drain Caused by Foreign Objects

Foreign objects

Items like small toys or jewelry can accidentally fall into the washbasin and cause a clog.
Clogged Drain Caused by Grease & Oils

Grease and oils

Grease, oils, and other fatty substances can solidify and create blockages in your sink drain.

How to Unclog a Bathroom Sink’s Drain DIY

Before trying any DIY methods, it’s crucial to use caution when considering chemical pipeline cleaners, as they can damage your pipes and are harmful to the environment.

1. “Zip-It” Tool to Remove Hair from Bathroom Sink Drain

A Zip-It tool is a simple and inexpensive way to remove hair and other debris from your basin waste pipe. Simply insert the tool into the waste pipe, twist it, and pull it out to remove the clog.

2. Use a Wet-Dry Vacuum Cleaner

A wet-dry vacuum cleaner can be used to suck out the block from your restroom basin pipeline. Make sure to create a tight seal around the waste pipe and turn the vacuum on to its highest setting to remove the blockage.

3. Pour Boiling Water into Bathroom Sink Drain

Pouring boiling water into the basin waste pipe can help dissolve soap scum, grease, and other debris that may be causing the clog. Be sure to use caution when handling boiling water to avoid burns.

4. Plunge the Clogged Bathroom Sink Drain

Using a plunger can help dislodge clogs in your basin waste pipe. Put the plunger over the waste pipe, push down firmly, and then pull up quickly to create suction that can help break up the clog.

5. Use the Drain Snake (Drain Auger) to Unclog the Bathroom Sink

A drain snake, which is also called a drain auger, is a more advanced tool for tackling stubborn clogs in basin drains. Insert the snake into the drain, turning the handle clockwise to break up and remove the blockage.

6. Clean out the P-Trap to Fix the Clogged Sink

Is your restroom basin draining slowly or not at all? A clogged hand basin is a frustrating and all-too-common household problem. Fortunately, in most cases, the culprit is the P-trap – a vital component of your sink’s plumbing. We’ll guide you through the steps of cleaning the P-trap to solve a hand basin blockage.


  • First things first, gather the necessary tools and materials. You’ll need a bucket, a wrench, a wire hanger or small brush, hot water, and soap.
  • Turn off the water supply to the washbasin. This will prevent any water from flowing while you’re working on the P-trap.
  • Clear the area around the washbasin. You’ll need plenty of space to work, so remove any clutter from the area.

Remove the P-trap

  • Put a bucket underneath the P-trap to catch any water and debris. Trust us, and you don’t want this stuff on your floor.
  • Use a wrench to unscrew the connectors on both sides of the P-trap. Be gentle, as the connectors can be fragile.
  • Carefully remove the P-trap and set it aside. Don’t be surprised if there’s water and gunk inside.

Remove the trapped debris

  • Use a wire hanger or small brush to loosen and remove any debris trapped inside the P-trap. Be thorough, as even a small amount of debris can cause a clog.
  • Clean the P-trap thoroughly with hot water and soap to ensure the removal of debris and unpleasant odors.

Reassemble the P-trap

  • Reattach the P-trap to the hand basin drain and the pipe leading to the wall. Make sure the connectors are tight but don’t over tighten them.
  • Use a wrench to tighten the connectors properly. This will guarantee a secure seal and prevent any leakage.

Test the bathroom hand basin drain

  • Turn on the water supply to the washbasin.
  • Let the water run for a little while to make sure that the waste pipe is clear. If the water is draining properly, congratulations! You’ve successfully repaired your clogged hand basin.
  • Check for any leaks around the P-trap and connectors. If you notice any leaks, tighten the connectors further.

Cleaning out the P-trap is a simple and effective way to repair a clogged hand basin. However, if you’re uncomfortable working with plumbing or unable to repair the problem, don’t hesitate to seek professional help. And remember, always exercise caution when working with plumbing – safety first!

7. Using a Drain Bladder to Unclog the Sink

A drain bladder is a specialized tool that uses water pressure to clear clogs in the restroom basin pipeline. However, this method can be complicated and may require the expertise of a professional plumber. If you’re unsure about using a drain bladder, it’s best to call a professional to avoid causing further damage to your plumbing system.

Cleaning Bathroom Sink Pipes with Vinegar and Soda

A mixture of vinegar and baking soda can be a safe, eco-friendly alternative to chemical pipeline cleaners for cleaning basin drains. Pour one cup of baking soda into the waste pipe, followed by one cup of white vinegar. Allow the mixture to sit for 15-30 minutes before flushing with hot water. This method can be used for general waste pipe maintenance and to help clear minor clogs.

8. Call a Plumber to Fix the Clogged Bathroom Sink

If you’ve tried all the DIY methods to unclog your toilet basin with no success, it’s time to call a professional plumber. The 5 Star Plumbing is here to help with all your plumbing needs, including clogged drain / back up and sewer replacement. Our experienced plumber will diagnose the problem and provide a lasting solution. Don’t let a clogged hand basin disrupt your daily routine any longer. Contact us today and experience a 5-star service!

The Bottom line

Unclogging a bathroom sink drain can be straightforward with the right tools and techniques. Whether you choose to tackle the issue using DIY methods or by calling an emergency plumbing service, it’s essential to address the issues promptly to prevent further damage and maintain the functionality of your toilet basin.


Your hand basin may not be draining due to a clog in the pipeline caused by hair, soap residue, or other debris. It could also be due to a malfunctioning stopper or an issue with the plumbing vent.

One option is to use a drain snake to remove the blockage physically. Another option is to use baking soda and vinegar to dissolve the blockage, followed by hot water to flush it out.

To unclog a sink is to remove any visible debris, then use a plunger or drain snake to remove the clog manually. If these methods don’t work, mixing baking soda and vinegar with boiling water or a commercial pipeline cleaner can be effective.

To fix a slow draining sink, start by removing any visible debris from the sink stopper and drain. Then, try using a mixture of baking soda and vinegar followed by boiling water or a commercial pipeline cleaner to break up any blocks in the pipe.

First, use pliers to unscrew the nut holding the drain in place to remove a hand basin drain. Then, use a drain wrench or pliers to remove the drain assembly from the sink, being careful not to damage the sink or plumbing.

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