Home / Sinks / How to Install a Sink

 If you’re updating your kitchen one of the easiest ways to breathe new life in to the space is by fitting a brand new, sparkly kitchen sink. Whilst some may prefer to get the professionals in, if you fancy trying your hand at installing your sink yourself all you’ll need are a few tools and a little know how. Our easy-to-follow instructions will guide you through the installation process step-by-step.

What You Will Need

Before you get started make sure that you have the following tools and materials. Starting without any one of these items could slow down the installation process, and no-one wants to get halfway through a project and realise they can’t complete it. Always wear the correct safety clothing too – goggles are a must for this task.


  • Safety goggles
  • Tape measure
  • Hacksaw
  • Utility knife
  • Putty knife
  • Pipe wrench
  • Socket wrench
  • Adjustable wrenches
  • Screwdriver
  • Drainpipes and fittings
  • Small bucket


  • New sink
  • Work gloves
  • Towels
  • Plumber’s putty
  • Strainer

Got it all? Let’s get started.

Getting Ready for Your New Sink

Before you start tearing anything out, you need to purchase your new sink. You need to decide whether you simply want to replace your old sink like-for-like, or fancy something a bit different. If you’re going for a new style then you may find that you need to alter your countertop and/or the plumbing in order to install the new sink.

We’d recommend drawing a quick sketch of your sink and noting down the measurements of your current sink, including the distance from the sink wall to the drain. Take this with you when you go shopping as a reference so you know that your new sink will fit your current configuration.

At this point you should also decide if you want to replace the sink and faucet, and whether you want to add any accessories such as a soap dispenser.

Standard sinks have between one and four holes on the back lip to allow room for additional accessories. Installation of these new components is best done during the fitting of the sink as you have easy access to the hardware with the sink removed from the countertop.

Once you’ve purchased your new sink, double check the measurements against your old one at home before proceeding on to the next step.

Removing Your Old Kitchen Sink

Grab your safety goggles and the tools and materials from the start of this article and let’s get started!

Step 1: Take a picture of the plumbing configuration under your sink. It might seem silly now, but when you’re trying to connect everything back up later, you’ll be pleased you did! At this point you should also turn off the water; either the hot and cold lines to the sink, or the whole house if you’re having trouble isolating. Turn on the taps in the sink to drain the remaining water out and relieve the pressure built up in the pipes.

Step 2: Using the adjustable wrench, disconnect the water lines from the faucet. Put your bucket underneath where you’re working to catch any water from the drainpipes or lines.

Step 3: Remove the dishwasher drain line, if you have one.

Step 4: Under the sink you’ll see clips running all the way around the perimeter. Loosen these and turn them towards the sink bowl.

Step 5: Using the utility knife, you now need to cut the caulk around the sink and the countertop to free it. Once you’ve cut all the way around, push the sink from underneath to release it from the countertop.

Step 6: Lift out the old sink and place it out of the way. Using the putty knife, remove the old caulk, putty and any grime from the opening where the sink was installed. You should also use this time to clean any components you wish to keep.

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How to Install your New Sink and Faucet

Now the old one is out of the way, it’s time to fit your new sink.

Step 1: If you chose a sink with the same dimensions as your old one, pop it straight in the hole, just to double check it fits correctly.

If you purchased a bigger sink, then flip your new sink upside down on the countertop, draw a line around the outline and, using a hacksaw or jigsaw, make the current hole larger.

Step 2: Now you know your sink fits, pull it back out of the hole and make sure the clips on the underside are all turned in towards the sink bowl. At this point you should also put the faucet and any other accessories in to the holes.

Step 3: With the sink still upside down, apply a small bead of plumbers putty all the way around the drain strainer, insert it in to the hole and press firmly to ensure that it has adhered.

Step 4: You can now roll the sink on to its side to fit the rest of the drain. Place and secure the rubber gaskets and threaded flange. Once this is in place, wipe away any excess putty around the drain using a cloth or piece of kitchen roll.

Step 5: It’s now time to install your sink. Begin by running a small bead of silicone sealant around the underside of the basin. Then lower the sink slowly into position, ensuring that everything is lined up correctly before completely letting go.

Step 6: Get under the sink and turn the clips outwards, securing the nuts and screws.

Step 7: Let’s get the sink plumbed in. You may want to reference the photograph you took earlier as you now need to attach the supply lines to the water connections of the faucet. Make sure the connections are tight, but not overly so.

Step 8: Reinstall the dishwasher drain and sink drain pipe.

If your old pipes don’t line up with your new sink you can easily adjust them.

If your pipe is too long, measure the required length and add a little bit extra on for a secure fit. Alternatively, if your pipe is too short, purchase a new pipe with the same diameter as the one you need to replace. Measure the length needed with a little extra for a snug fit and cut to size using the hacksaw.

Then all you need to do is place a washer on the pipe followed by a slip nut. If you require a slip nut for the other end of the pipe, slide it onto the pipe facing the appropriate direction, and add the washer afterwards. Hold the pipe in place and screw the nut to the fittings.

Step 9: Run a small bead of sealant around the lip of the sink where it meets the countertop.

Step 10: The moment of truth. Turn the water back on and check for leaks!

Looking for a new sink? See our full range here. If you need help choosing a sink to buy, or want to know how to properly clean your sink after installing it, check out the following guides:


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