Clogged Kitchen Sink or Pipe: Causes, DIY Fixes and Plumber Prices

From $94.76 fixed price4.9 from 136 Google reviewsSame-day slots

A kitchen sink that drains slowly, gurgles or fills with water is almost always blocked by grease, food scraps or coffee grounds that have built up in the trap or the pipe below it. It usually starts as a slow drain and gets worse over a few weeks.

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You can often clear a partial blockage yourself. When it will not clear, or keeps coming back, StringsSG plumbers unclog kitchen sinks and pipes from $94.76 at a fixed price you see before you book.

What's Included

  • Clearing the blockage in the sink waste, trap and pipe
  • Flushing the line and checking the sink drains freely
  • Supplying and replacing the bottle trap if it is cracked, leaking or worn out
  • Checking the joints under the sink are dry before handover
Plumber unclogging a kitchen sink pipe in a Singapore flat

How to Unclog a Kitchen Sink Yourself

  1. 1Scoop out standing water into a bucket so you can work on the drain.
  2. 2Pour a kettle of hot water, just off the boil, slowly down the drain to soften grease. Avoid pouring fully boiling water into uPVC pipes.
  3. 3Pour half a cup of baking soda down the drain, then a cup of vinegar. Leave it for 15 minutes, then flush with hot water.
  4. 4Use a sink plunger. If you have a double sink, block the second drain with a wet cloth so the pressure goes into the blockage.
  5. 5Clean the trap. Put a bucket under the U-shaped or bottle trap below the sink, unscrew it by hand, empty it and rinse it before refitting.

Stop and call a plumber if

  • The sink clears for a few days and then blocks again
  • Water backs up into the other sink or a floor trap
  • The trap or pipe joints leak after you refit them
  • You can smell sewage from the sink

Clogged Kitchen Sink Price in Singapore

Fixed prices per job. You see the total before you confirm the booking.

Kitchen

  • Clear clogged kitchen sink or pipe

    Kitchen Plumbing

    S$ 94.76

  • Supply & replace bottle trap for kitchen sink

    Kitchen Plumbing

    S$ 122.36
See all plumber prices

What clogs a kitchen sink

  • Cooking oil and grease, which set in the pipe as they cool
  • Rice, noodles and other food scraps
  • Coffee grounds and tea leaves
  • Soap scum combining with grease
  • A dirty or damaged bottle trap

What Affects the Price

  • How far down the pipe the blockage is
  • Whether the bottle trap needs replacing
  • Grease build-up that needs a thorough clean rather than a quick clear

How to Book a Plumber

  1. 1. Open a Service Request

    Pick the job on the StringsSG website or app and see the fixed price before you confirm. It takes under a minute.

  2. 2. Secure Online Payment

    Pay from your StringsSG account via PayNow, GrabPay, credit or debit card.

  3. 3. Team Assignment

    We assign a plumber for your job. Chat with them in the app before the visit.

  4. 4. Job Done

    The plumber arrives within your chosen 2-hour arrival window and completes the work.

Clogged Kitchen Sink FAQs

StringsSG clears clogged kitchen sinks and pipes from $94.76 at a fixed price. Replacing the bottle trap under the sink is listed separately in the table on this page, and you see the total before you confirm.
Avoid it. Oil and grease cool and harden inside the pipe, and they trap food scraps. Let oil cool, wipe the pan with kitchen paper and put the paper in the bin.
It can help with a slow drain caused by light grease and soap build-up. It will not clear a solid blockage such as a mass of food scraps, which needs a plunger, a trap clean or a plumber.
A smell usually means food and grease are rotting in the trap. Cleaning the trap and flushing with hot water normally fixes it. If the smell is of sewage, the blockage may be further down the pipe.

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