How to unblock a bathroom or kitchen sink

A blocked sink can cause a bad smell in your home and disrupt your plumbing. But if your sink is blocked there is no need to call in the professionals just yet. has compiled an easy guide to advise you on how to unblock your sink.

How to unblock your bathroom or kitchen sink

You should begin by grabbing a plunger and working on it.

You can plunge by sucking the air out of the pipe and then forcing it back in, which helps to dislodge the blockage.

To use the plunger, simply place the suction cup over the plughole and ensure a seal is formed before driving the handle up and down in a pumping motion.

You will know when the sink blockage is cleared because the full sink will drain away quickly.


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You can also unblock a sink by blasting water at the blockage.

Sometimes using a hard burst of water can push out whatever is blocking the sink.

When using water to dislodge a blockage, you should take a plastic milk bottle or two-litre drink bottle, filling it with hot water and tipping it upside down the bottle hole against the plughole.

Then you should squeeze the bottle as hard as possible.

The fast and directed flow of water may well prove to remove the blockage in your sink.

You can also try to unblock a sink by dislodging the blockage.

When a plunger proves ineffective because a blockage is dense and greasy, suction may be unable to dislodge it.

Therefore you may need something to break down the blockage.

There are lots of hardcore drain unblocking solutions on the market which can be harsh on your sink and linger in and around the drain.

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Another solution could be to use a baking soda and vinegar solution.

This low-cost method can be made by adding a couple of teaspoons of baking powder with one cup of vinegar.

Bicarbonate of soda can also be used in place of baking soda.

Then place this solution down the sink to dislodge the blockage.

Alka-Seltzers can also prove effective in dislodging mild blockages and nasty smells.

With this method, you should place a couple of these down the plughole and then pour a cup of vinegar down the sink.

After a few minutes, you should then blast the blockage with hot water to flush through the blockage.

A little biological washing powder can also be used by placing two tablespoons of washing powder down the plughole followed by a kettle’s worth of boiling water.

This solution can remove any fats and grease which have built up.

Soda crystals may also prove to be effective.

A long flexible wire tool can also be used to dislodge a blockage.

Feed the wire down the drain so it bends around the pipe.

By feeding the wire in this way, it can clear the blockage.

You can specifically purchase this type of wire or can use a straightened wire coat hanger, but be careful of any sharp edges.

If all of the above solutions prove ineffective, you can unscrew the U-bend and clear the blockage by hand.

To do this, put on a pair of rubber gloves and clear the area beneath the pipe.

Then place old towels beneath the U-bend and slowly unscrew the U-bend or bottle trap using a wrench.

This can come apart in several ways with various parts, so it is best to take a picture first so you can be sure to reassemble it correctly.

You should try to have a bucket ready to catch any water as it falls apart.

Also, be sure to wash out any dismantled parts or pipework in another sink or using an outside tap.

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