STEP-BY-STEP GUIDE

How to unblock a sink - video

It's very costly to get a plumber in to do jobs you can quite easily do yourself, and unblocking a sink is just one of those jobs. So here's our great guide on how to unblock your sink. You might also like to read our companion article How to unblock a sink, and How to unblock a sink with drain cleaner.

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How to unblock a sink - video

You will need:

  • Large bucket
  • Adjustable wrench
  • Auger
  • Sink plunger
  • Pump plunger

A drain full of hair, soap scum and general household gunk can be smelly, unsanitary and downright annoying. The good news is that it only takes a few minutes to unblock it and get the water washing away freely. You don't have to use any corrosive drain cleaners either, so you won't be harming the environment or damaging your pipes. Grab a plunger and get ready to wash your drain troubles right down the sink.

Time to complete the job: 10 mins to 1 hour

  • Step 1: Expose your pipes

    Step 1: Expose your pipes

    Slide the sink pedestal away from the sink so your pipes are visible.
    If you have an old bathroom, you will probably have a u-bend trap under your sink.
    If your bathroom is less than ten years old, you will likely have a bottleneck trap.

  • Step 2: Auger method

    Step 2: Auger method

    This method will work for minor u-bend blockages.
    Push the flexible wire of your auger into the plug hole. Keep pushing until it's down as far as it will go.
    Use the handle on the auger to wind the wire. This will twirl the wire, which should grab any gunk in the pipes and push it out into the sewer.

  • Step 3: Plunger method

    Step 3: Plunger method

    Cover the plug hole with the sink plunger.
    Push until suction holds the cup in place.
    Plunge up and down several times. The suction should suck or push the blockage out of the way.
    Remove the plunger and run the tap to clear out any debris.

  • Step 4: Pump plunger method

    Step 4: Pump plunger method

    Cover the plug hole with the end of the pump plunger.
    Pull the pump handle up just once.
    Remove the plunger and run the tap to rinse away any gunk.

  • Step 5: Remove the trap (u-bend)

    Step 5: Remove the trap (u-bend)

    If the auger and plunger both fail to clear the block, you'll have to remove the u-bend.
    Place the bucket under the trap. Loosen the fixings at either end of the u-bend and remove the trap.
    Empty any water from the u-bend into the bucket.
    Clean out the pipe with a brush and some disinfectant.
    Replace the u-bend.

  • Step 6: Remove the trap (bottleneck)

    Step 6: Remove the trap (bottleneck)

    Place the bucket under the sink.
    Untwist the bottom half of the bottleneck (it might stick a bit).
    Empty the contents into the bucket.
    Wash out the bottleneck with some disinfectant.

    Tip: The trapped gunk could be a bit smelly and vile so don't breathe too deeply!

  • Step 7: Replace the trap

    Step 7: Replace the trap

    Before you replace the trap, make sure the plastic seal is fitted correctly.
    Twist the trap back into place.
    Squirt some disinfectant into the sink.

    Tip: If the plastic seal is worn or torn, get a new one to prevent any leaks.