How to Install a Kitchen Sink?

Are you going to change your existing kitchen sink? Then you can hire a plumber or do it yourself. But installing a sink isn’t as easy as fixing the faucet only. In fact, it’s a bit more challenging. You’ll also need some complicated tools to do that.

The installation process also varies depending on which type of sink you want to install. There are single and double bowl drop sinks.

As most of the house kitchens have drop-in sinks, we’ll discuss it only.


  • New sink
  • Putty Knife
  • Plumber's Putty
  • Putty Knife
  • Pipe Wrench
  • Hacksaw
  • Pliers
  • Socket Wrench
  • Shop Towels

Part 1: Removing the old one

Step 1: First, turn off the shutoff valves below the sink.

Step 2: Now turn on the handles of the faucet to relieve the existing pipe water.

Step 3: If your sink has a garbage disposer, then unplug it. But before doing so, don’t forget to turn off the circuit. You’ll require pliers to disconnect the P-trap and drain pipe.

Step 4: Next, check the manufacturer’s instruction to know how to remove the disposer. Work according to that.

Step 5: Now, below the counter, there are metal clips. Locate them around the perimeter of the sink. Then loosen the clips with a socket wrench and then swing them.

Step 6: Now draw a utility knife around the sink to cut the caulk. Then push the sink from below to lift it away.

Step 7: Now you have to remove the caulk, grime, and any old plumber’s putty. Use a putty knife to remove them from the countertop.

Part 2: How to install a drop-in sink

Step 1: First, Verify whether the new sink fits in the countertop hole or not. If not, then you have to modify the opening. Place the sink in the opening and turn it upside down. Then Trace the outline and cut it out with a jigsaw.

Step 2: Now Remove the sink and attach the clips inward toward the bowl.

Step 3: Now install the strainer. Apply some plumber’s putty around the drain strainer and press it firmly. Use a soft towel to remove any excess putty.

Step 4: Now place the rubber gaskets. Tilt the sink and secure the gaskets as well as threaded flange underside the sink drain.

Step 5: In case your sink has a garbage disposer, also install the mounting bracket to its bottom. Use a screwdriver. And also follow manufacturer’s instruction.

Step 6: Next, Apply silicone sealant at the edge of the basin. Now align the basin squarely. Then, below the sink, rotate the metal clips outward. Also, tighten the screws.

Step 7: Now attach all the water connections both of the supply pipes and the faucets. Install the garbage disposer, dishwasher drain. Also, connect the sink drain pipe to discharge pipe.

Adjustment of pipes

In case your new sink doesn’t line up to the old drainpipes, you’ll need some adjustment.

If the pipes are too long, you have to cut the pipes. Use a hacksaw to do that. Place a washer and slide a slip over it onto the pipe. Then screw the slip nuts.

If the pipes are short, then Purchase a longer pipe of the correct diameter. Now place it similarly as described above.

And In case you require to bend the pipe, buy a rotating P-trap. Or an Outlet tee can also be tried. Now Line it up. If you use an extension pipe, you’ll only need to bend it.

Step 11: Again, apply some silicone sealant at the perimeter of the sink.

Step 12: Now reconnect all the power lines and turn on the shut-off valves. Also, observe the flow and any leakage.

Final Word

Installing a new kitchen sink can be fun if you have the right tool to do that. Don’t compromise your safety as you have to deal with some delicate materials.

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