How to unclog a sink behind the wall?

Author: Dr. Harvey Bergnaum  |  Last update: Monday, November 24, 2025

Pour one cup of fresh baking soda down the drain, followed by one cup of white vinegar. Place a rubber stopper or other sink hole cover over the drain opening. Wait 15 minutes to allow the vinegar and baking soda to unclog your drain, Then take out the drain cover and run hot tap water down the drain to clear the clog.

How to unclog a pipe inside a wall?

When a plunger doesn't work, you can try a plumbing snake—if you have one on hand. Simply unwrap the cable and insert the head into the drain opening. Twist gently with the handle as you go down to dislodge any debris stuck to the sides of the pipe wall.

How do you unblock a severely blocked sink?

Vinegar is effective at cutting grease and baking soda causes a reaction with vinegar that bubbles up and helps to remove blockages in the pipe. Pour the baking soda into the drain first, followed by a generous glug of white vinegar. Wait a few minutes until the mixture has stopped fizzing and flush with hot water.

How do you unclog a sink beyond the trap?

Baking Soda & Vinegar to Clear a Drain Clog

all you need to do is mix around 1/3 cup of baking soda with 1/3 cup of vinegar in a cup. You'll have to immediately pour this solution down the drain to be effective. Rinse with hot water after about an hour.

What is the strongest thing to unclog a sink?

The Santeen Sulfuric Acid Drain Opener proved to be the most potent among all the chemical drain cleaners we tested, effectively dissolving 80% of the hair, 80% of the organic matter, 40% of the grease and 76% of the paper products.

How to Unclog a Sink -- The Right Way

Why should you never use baking soda and vinegar to unclog a drain?

The fizzing reaction and gas created may help loosen some small blockages. However, it is not typically strong enough to break down larger clogs or remove hard-to-reach debris. As a result of the above facts, if you have a serious drain clog, using baking soda and vinegar is unlikely to be effective.

Will a clogged sink eventually drain?

While it's not the end of the world, it won't cause immediate damage to your home and the water will eventually drain away, a slow drain is still a problem that needs to be fixed. A drain that is slow to empty will mean there is already a clog in the system and, over time, one that will only get worse.

How do you unclog a deep clog?

How To Unblock A Clogged Drain Deep In Pipe
  1. Using a Toilet Plunger or Plunger.
  2. Applying Baking Soda and Vinegar.
  3. Employing a Drain Snake or Plumbing Auger.
  4. Hydro Jetting Techniques.

What is the best sink unblocker?

9 Best Drain Cleaners, Tested by Experts
  • Best Overall Drain Cleaner. Drano Max Gel Liquid Clog Remover. Read more.
  • Best Drain Cleaner for Hair Clogs. Liquid-Plumr Hair Clog Eliminator. Read more.
  • Best Drain Cleaner for Kitchen Sinks. Green Gobbler Drain Opening Pacs. Read more.

What is safe to pour down the drain to unclog it?

Add a half cup of vinegar and put something over the drain. Wait half an hour and then pour boiling water into the drain. Dish detergent: For a clogged toilet, pour a quarter cup of dish detergent into the bowl and then pour hot water over it. Use a plunger.

What can I pour down my sink to unblock it?

You'll also need to boil a kettle of water to help flush away the blockage.
  1. Bicarbonate of soda (or baking powder) and white vinegar. ...
  2. Washing powder (biological) ...
  3. Alka Seltzers and white vinegar. ...
  4. Use a wire or tool to poke/pull out the blockage. ...
  5. Use a blast of water. ...
  6. Use a natural drain cleaner. ...
  7. Bleach and hot water.

How do you unclog a bathroom sink behind the wall?

How do you unclog a bathroom sink drain?
  1. Use a “Zip-It” drain cleaning tool to remove hair clumps. ...
  2. Pour boiling water into the sink drain. ...
  3. Try using vinegar & baking soda. ...
  4. Try plunging the clogged drain. ...
  5. Take apart your P-trap and clean it. ...
  6. Use a drain snake (or a plumber's snake) to snake your drain. ...
  7. Call a plumber!

What do plumbers use to unclog pipes?

Plumbers choose hydro jetting equipment for the most stubborn, deep-set clogs. This drain clearing tool uses high-pressure water to flush your pipes and remove years of buildup. The water jet is so strong that it can even break up any tree roots that have found their way into your sewer line.

How to fix a deep clogged sink?

  1. Pour a pot of boiling water down your drain.
  2. Pour a mixture of one cup of water and one cup of vinegar down the drain.
  3. Cover the drain with a plug and wait 5–10 minutes.
  4. Flush the sink drain with boiling water.

How to unblock a clogged drain deep in a pipe home?

A plunger can be effective for dislodging clogs near the drain opening. For deeper clogs, a drain snake or auger can reach and break up blockages inside the pipe. Hydro jetting kits, which use high-pressure water to clear pipes, are also available for more persistent clogs.

Why is my sink clogged but pipes are clear?

Airlock or Plumbing Vent Issues: Sometimes, it's not food residue, oil, or hair that gets trapped in your pipes, but air, making it seem like your pipes are seemingly clear.

How do you unclog a drain ASAP?

Boiling water is great for clearing grease, soap residue, and food particles. To do this, clear any excess water from the sink. Then boil a large pot or kettle of water and pour it slowly into the drain. Let the hot water sit in the sink or tub for a few minutes before running any cold water through.

What dissolves a blocked sink?

Pour one cup of fresh baking soda down the drain, followed by one cup of white vinegar. Place a rubber stopper or other sink hole cover over the drain opening. Wait 15 minutes to allow the vinegar and baking soda to unclog your drain, Then take out the drain cover and run hot tap water down the drain to clear the clog.

What to do if Draino won't drain?

When Drano won't go down the drain, grab a plunger instead. Many people think that these are only good for toilets. However, they can create suction that can dislodge your clog. Make sure that you get a plunger that can seal all the way around your drain.

Is it OK to plunge a clogged sink?

Yes, the simple plunger can unclog your kitchen sink too. When you use the plunger, plug the other holes in you kitchen sink with a rag cloth. Also, ensure that the plunger cup completely covers the clogged kitchen sink hole. Now, keep the plunger in an upright position and plunge about ten times vigorously.

Can I pour boiling water down the drain?

Pouring boiling water is quite risky as it might lead to a steam burn or scalding. Another thing to keep in mind is what type of material you are pouring in into. If you have a porcelain sink, it is likely to crack due to the heat. All in all, pouring boiling water down your drain will only cause issues down the road.

What is the best homemade drain cleaner?

Baking Soda + Vinegar
  • Pour 1/2 cup baking soda, followed by 1/2 cup vinegar down drain.
  • Plug drain and let sit for one hour.
  • Then, pour a pot of boiling water down drain. Repeat if necessary.

What will dissolve hair in a drain?

Heat 2 or 4 liters of water on your stove or in a kettle to just short of boiling. Add about 1/2 cup of salt. Try pouring this down the drain, then wait 15 minutes before seeing if it will clear more easily. If you need a stronger cleaning, pour 1/2 cup of baking soda down the drain, then add 1/2 cup of vinegar.

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