A slow draining kitchen sink is usually caused by fats, oils grease and foods that stick on the drainpipe and P-trap restricting the flow of water. It could also be caused by a clogged vent stack, which creates negative air pressure in the drainpipe. A clogged garbage disposal could also be the culprit.

How do you fix a slow kitchen sink drain?

Kitchen sink not draining? Here are 6 ways to unclog it

  1. Attack with boiling water. …
  2. Check the garbage disposal. …
  3. Plunge away the blockage. …
  4. Break it down with baking soda and vinegar. …
  5. Try the plumber’s snake. …
  6. Clean the P-trap.




Why is my sink draining slow?

The air that comes into the drain through the overflow helps water in the sink to drain faster. The sink overflow is another place where debris and build-up can collect over time. If a sink is draining slowly and cleaning the drain does not seem to solve the problem, it is a good idea to clean the overflow as well.

How do you unclog a slow draining double kitchen sink?

7 ways to unclog your kitchen sink

  1. Remove the clog by hand. If you can, use a flashlight to get a good look inside the drain. …
  2. Use a plunger.
  3. Use boiling water. …
  4. Use a natural drain cleaner. …
  5. Remove and clean the drain trap. …
  6. Use a drain snake. …
  7. Call a plumber.

How do you unclog a slow drain?





Add 1 cup of white vinegar to 1 cup of hot water, and then pour this mixture over the drain, onto the baking soda. The reaction of the vinegar with baking soda will cause bubbling. This reaction will help loosen the sludge that has collected in the drain pipe. Cover the drain with a plug, or close the stopper.