The Big Event! Offers on Paint, Flooring, Doors & more
Skip to content Skip to navigation menu
Basket
0

Planning & preparation

  • A leaking sink is generally caused by the washers, the plastic seals between the sink and the strainer, being old, perished or damaged
  • Firstly, try and work out where your leak is coming from. Check all the pipes underneath the sink, including the cold and hot tap feeds, for any signs of drips or moisture. Then, hand-tighten the compression fittings before testing the sink for leaks again
  • To check whether the washers are causing the problem, simply fit your plug and fill the sink with cold water, then wait to see if the level drops. If it does, you’ll almost certainly need to replace the washers
  • Several methods for fixing a leaking sink are shown in this guide, but if the problem persists then call in a professional

Do it right

  • If you do have to remove the plughole and washers, carefully clean the surrounding area before replacing washers and reassembling
  • It’s best to store manufacturer’s instructions for your sink and taps somewhere safe, as this information may help you to locate the source of the leak and solve the problem as quickly as possible
  • Check the seal periodically for the 24 hours following any repair work

Staying safe

  • Turn off the water supply before carrying out any plumbing work
  • No specific safety equipment is required, but it’s a good idea to be careful of sharp edges when removing the plughole and when cleaning the area around the sink hole

Step by step

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-1.jpg

Start by turning off your water supply. To do this, locate the stopcock and turn it clockwise.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-2.jpg

Remove any cabinet doors that may block your access to the pipes and the underneath of the trap.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-3.jpg

Place a bucket or watertight container underneath the trap to catch any water that spills out.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-4.jpg

Unscrew the two compression fittings that hold the waste pipe in place. You may need to use a wrench if the compression fittings are particularly tight.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-5.jpg

Carefully remove the waste pipe and empty the water into the container below.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-6.jpg

Next, disconnect the overflow pipe from the side of the trap.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-7.jpg

Remove the lower half of the sink waste by unscrewing the screws that holds the top of the drain to the strainer. It’s best to reach underneath and hold the bottom of the strainer still whilst you do this.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-8.jpg

Now remove the lower half of the waste unit.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-9.jpg

Then, lift the top of the waste unit out from above.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-10.jpg

Use a cloth to thoroughly clean the parts and the area around the hole. Take care as the edge may well be sharp.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-11.jpg

To install the replacement strainer, start by placing the thinner, wider rubber washer between the sink and the top part of the strainer.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-12.jpg

Then, put the thicker rubber washer and the bottom part of the strainer into position underneath the sink.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-13.jpg

Use a screwdriver to tighten the screw and secure in place.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-14.jpg

Reconnect the overflow pipe to the waste pipe, and then connect to the trap.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-15.jpg

Turn your water supply back on by twisting the stopcock anticlockwise.

2018-Wickes-How-To-Fix-A-Leaking-Sink-Step-16.jpg

Finally, run the tap to check the leak has been resolved.