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Why Is My Bathroom Sink Not Draining?

17 August

“A stagnant bathroom sink” is a nightmare described in four words.

We bet no one wants to enter the bathroom only to find dirty water in the sink or a slow draining sink. And it may not always be possible to hire a plumber instantly for your drainage issues. Luckily, some effective DIY techniques can bail you out of trouble. And we’re going to tell you about all that! But before we begin, let’s first understand what hinders the draining process of your bathroom sink.

Modern Bathroom Sink With Marble Benchtop

Why Won’t My Bathroom Sink Drain?

The number one reason your bathroom sink won’t drain is a clog, which is generally caused when hair, skin flakes, nails, etc., combine with soap scum inside the sink pipe. Aside from that, minerals from hard water can deposit inside the pipe, preventing the water from draining. You can try a bent wire coat hanger for the hair and pour half a cup of baking soda paired with apple cider vinegar or any vinegar or if you have chemical drain cleaners aside from your natural alternatives, you can try those too. And run hot water down the drain the way you unclog a kitchen sink. And speaking of kitchen sink, you probably thought, you’ll only have to worry about a slow draining sink in your clogged kitchen sink with the coffee grounds and other food, but here you are in the bathroom with a clogged sink to compete with your other blocked sink.

Moreover, poor sink maintenance can lead to clogged pipes. If you don’t clean the sink and pipe regularly or don’t use enough water to “flush” soap, toothpaste and other foreign objects down the drain, they can stop the water from draining. And the standing water will become home to foul odours and disease-causing germs.

The water inside the drain pipe will have no place to go and exert pressure on the walls, resulting in minor or full-blown leaks. Not only can this damage the pipe, but also any other surface in the vicinity. Plus, cleaning wastewater from the floors or walls can be a big nuisance.

One thing to note here is that while some clogs may slow down the draining process, others may stop it completely. Whatever the situation, it’s important to address a clogged sink drain early to prevent severe damage.

Fortunately, you can do a few things yourself to solve the problem of a clogged bathroom sink. Some are listed below.

4 Things To Do If Your Bathroom Sink Doesn’t Drain

Using Spoon To Put Baking Soda Down Drain

1. Pour Hot Water

Pouring hot water is one of the easiest methods to unclog a bathroom sink. All you have to do is heat (not boil) about 1 or 2 litres of water and pour it right near the basin stopper, some at a time. This will melt the soap scum and undissolved food particles stuck inside the pipe.

Use a teapot or jug for this purpose, as this will help target the right area. But be careful not to spill any on yourself. And depending on the severity of the clogged drains, you may need to repeat this a couple of times.

However, this technique can only be used for bathroom sinks draining slowly. Pouring more water into a stagnant sink is a disaster waiting to happen!

If you have a stagnant sink, try to remove the drain stopper and pull out any viable clog from the pipe using a bent coat hanger, nose pliers or drain snake. This should allow some water to drain, after which you can pour the hot water.

Besides, not all drain pipes are built to handle hot water, so make sure you don’t employ this hack for PVC or ceramic pipes.

2. Use Vinegar And Baking Soda Mix

Another great method to fix a slow sink drain is rab some baking soda and vinegar from your kitchen cupboard if the hot water method doesn’t yield the desired results.

Pour about 1/2 cup soda near the drain stopper and follow it up with one cup of vinegar. Now, grab an old rag and cover the stopper so the bubbling solution doesn’t flow out of the sink.

The baking soda and vinegar create a chemical reaction, which helps break down stubborn clogs. In the case of a fully or partially stagnant sink, you will see the water level going down, indicating the reaction is working. If you’ve run out of vinegar, replace it with salt; only this time, mix ½ cup each.

Wait 15 to 20 minutes to let the ingredients do their job, and pour some hot water to flush the pipe. You can also conduct this procedure once or twice weekly as a preventative measure against clogs.

3. Use A Plunger

Now, this drain cleaning tool is more manual and a bit (read a lot) messy, but trust us- there’s nothing like it to remove clogs that remain resistant to the above two methods.

Plunging Blocked Bathroom Sink

Firstly, put on a pair of gloves. Then, remove some water to place the sink plunger properly on the plughole. Make sure there’s enough to create a tight seal and keep the plughole in place. Then, block the overflow with some cloth.

Now, place a plunger with a flat head over the plughole to create a tight seal. Grab the handle and use swift to and fro motions to break any clog near the plughole. Repeat this step a few times, remove the plunger and wait for some time. You should see the water draining down the pipe. Finish off by pouring some hot water down the drain.

4. Clean The P-Trap

This more technical method may be necessary to remove extremely stubborn clogs that just won’t budge. But before starting, get a bucket, some old clothes or paper towel, a soft sponge, and a pair of wrenches.

Locate the slip nuts on either side of the P-trap (the U-shaped curved pipe below the sink) and remove them using the wrenches. Quickly place the bucket underneath to catch dirty water and wastewater that will flow down (if any). Now, clean the P-trap with a cloth or sponge and rinse it with plain water.

As an additional step, you can clean the stub (the part attached to the wall and the P-trap) using a plumber’s snake. Simply insert it until you feel resistance and rotate the handle to bring out hair, paper or other foreign objects. If you do not have a drain auger, you can also use a wire hanger.

Once done, reassemble everything and pour boiling water down to check the flow and dissolve any remaining clog from your plumbing system. We suggest avoid using any harsh chemicals, as you may damage the pipes more.

Are You Still Struggling With A Clog? Call An Expert Plumber!

Person Cleaning Sink With Spray Bottle And Cloth

Although our tips will help you clear the clog in bathroom sinks and even in your kitchen sink pipes, there are a few things you can do to prevent a clog in the first place. For one, refrain from throwing anything solid in the sink, like paper or food items or you’ll surely have a sink not draining properly. When washing dishes, throw your food debris in the garbage disposal. And place a drain catcher or sink stopper to trap unwanted substances that may have accidentally ended up in the sink from causing drain blockages.

Use the hot water or baking soda and vinegar method regularly to break down even the slightest clog at the very start. If you still have a clog, it’s time to reach out to the plumbing experts. Your plumbing system could face a different problem, and it’s best to address it sooner than later to prevent further damage.

Lastly, preventative maintenance from professional plumbers can prevent a slow sink drain from happening in your bathroom, which in the long run with save money.

Not sure who to call for your stubborn blocked drains? From hot water system installation and maintenance to clearing blocked drains, gas fitting, and dealing with other plumbing issues— you can rely on our fully licensed and highly recommended Gold Coast plumbers. Call us today!