Sat Aug 19 2023

Drop-In Sink Installation – Change the Way You Wash Your Dishes

Drop-In Sink Installation – Change the Way You Wash Your Dishes

Are you thinking about upgrading your kitchen sink? Feeling a bit overwhelmed by all the options out there? Don't fret! We've got you covered with a great solution: the drop-in sink!

Not only does it add a fantastic touch to your kitchen, but it's also a breeze to install, and the best part? It's affordable too!

Installing a drop-in sink can result in a marvelous transformation. Of course, we understand that you might be concerned about getting it just right. But fear not! The name says it all – it's a "drop-in" sink, meaning you gently drop it into your countertop and ensure there are no leaks.

We totally get your desire for a perfect installation, and that's why we've put together a handy guide on how to install your new drop-in sink. We'll walk you through each step, making sure you achieve that ideal kitchen upgrade you're dreaming of!


Let’s Get the Tools!

Let’s Get the Tools!


First: You need the drop-in sink. Make sure you cover them until you start the project, so it does not get damaged. 


Second: Check if you have the mounting hardware. Usually, the mounting hardware comes with the kitchen sink. But if you do not have the hardware, you can get them at your local hardware store. Mostly, you need kitchen sink clips. 


Tell the local hardware store employee the model of your sink, so they can give you the proper hardware. 


Third: You need plumber putty. Even better if you have a silicone caulk. Plumber putty is for making sure the drop-in sink is fixed properly in place. 


Fourth: You need to have the usual, everyday handy tools, such as a wrench and screwdriver. 


Fifth: You need a pencil or a marker, along with some cardboard. Now, this can be a bit confusing, but there is a good reason and we will explain the uses for both in our installation guide. 

Sixth: You need safety gear, which includes goggles, gloves, and a head guard. 


In summary, for a smooth installation, you need:

  • Drop-in sink
  • Mounting hardware
  • Plumber putty or silicone caulk
  • Putty knife 
  • Wrench 
  • Screwdriver
  • Pencil and cardboard
  • Safety gear

Installation Scenarios

There are usually two scenarios. One is that you install a brand new drop-in sink on your new countertop. The second is that you are replacing the old one with the new drop-in sink. 


In most cases, both scenarios can play out the same way with minor differences, such as removing the old sink and cleaning the area for a new sink, as you would in the second scenario.

So, starting at the beginning, let’s go through the first scenario first, then let’s take a look at the second scenario. As we said before, most of the installation is similar with a few changes in both instances. 

The First Scenario – A New Countertop and Drop-In Sink

The First Scenario – A New Countertop and Drop-In Sink


In our first scenario, you have a new countertop with no cut for your drop-in sink. Our biggest hurdle is cutting the countertop perfectly, so the kitchen sink fits as intended. This is where the pencil and cardboard come in.

The first step is to place the cardboard on the floor. Next, place the drop-in sink on top of the cardboard.

Make the outline of your drop-in sink on the cardboard. This gives you the overall space that you need to cut on your countertop. Once you drew the line, draw another line with the same outline, but a quarter of an inch inside the original outline. 


This is the actual line that you are going to use to install your sink so that it fits perfectly air-tight.

Mark this line (the ¼” inward line) on your countertop. Make sure you align the plumbing lines correctly with the drain line of your sink. Now cut the countertop with a heavy-duty cutter. Ensure you wear your safety goggles, gloves, and headgear while cutting the countertop. 

Mark the line sink installation

Once you cut the countertop, clean the area. Make sure it is free from debris since debris can lodge in the drain and cause water to pool after the installation process is over.

Next, slowly lower the drop-in sink, and align the drain line with the existing plumbing line. If you have a hairline gap between the sink and the countertop, you can use silicone caulk, or plumber putty to close the gap. 


Not only does this help to literally bridge the gap, but it also helps you to prevent water from getting into the gap and causing water damage.

Next, place the sink clips underneath the sink on both sides. Note that it will mostly be on the rim. Tighten the clips with the help of a screwdriver, or even a drill. But, we recommend the screwdriver because the drill can damage the sink if you are not careful. 


Now, the sink is perfectly fitted in its place. But the job is not done, yet. Lastly, connect all the drain and faucet lines to your drop-in sink.

At this point, it can be enticing to use the sink right away. But, trust us, do not use the sink right after the installation. Give it an hour or two for the silicone caulk to set. After an hour or so, run the faucet and check for any water leaks and water blockage in the drain.

Great! You have successfully completed your DIY project. Give yourself a pat on the back!

The Second Scenario – Replacing the Old Sink

The Second Scenario – Replacing the Old Sink


Installing the new sink is the same as the first scenario. Follow the same steps for a perfect installation. The major difference here is the removal of the old sink.

First, disconnect your faucet and all the water lines from the sink. Ensure the sink is dry. When you disconnect the pipeline to your sink, there might still be water in the line. Use a small bucket to collect the remaining water.

After disconnecting the pipeline, use the pliers to safely disconnect the drain line. Use a sponge to soak up the water spilled during the process. Usually, the disconnection process is mentioned in the installation book that comes with the drop-in sink. Use that as your guide for the safe removal of the drain pipeline.

After disconnecting all the water and drain lines, time to loosen the sink clips. Use a screwdriver to unscrew all the sink clips.

Once you removed the sink clips, take a putty knife and scrape away the plumber putty. This helps to break the seal between the sink and the countertop.

Lastly, you can now remove the sink from the countertop, thanks to the seal being broken. Remember to clean the area before installing the new drop-in sink.

Suggested Reads:

  1. Bathroom Sink Materials – All Important Things to Know in 2023!
  2. What Is an Apron Sink? What to Know About Apron-Front Sinks
  3. What Are the Benefits and Drawbacks of a Fireclay Kitchen Sink?


  • Are drop-in sinks easier to install?
  • Yes, drop-in sinks are the easiest kitchen sinks to install in any kitchen. With a handful of tools and clear instructions, even beginners to DIY can successfully do the project with ease.

  • Do drop-in sinks need support?
  • Yes, drop-in sinks need support and the support is provided by the sink clips installed under the sink. Also, most drop-in sinks weigh less, meaning the countertop itself can support the sink’s weight.

  • How deep can a drop-in sink be?
  • To avoid any issues, it is best to choose a sink that has a depth between 20.5” to 22”. This helps you to wash your dishes easily without having to worry about the dirty water splashing on you. 

    Final Thoughts

    Truth be told, the installation of a sink can look a bit daunting, especially if you do not have prior experience. With a sophisticated guide, you can get the job done right. That is the reason why we came up with this small guide about a drop-in sink installation. If you are in the market looking for a stylish, yet great-functioning drop-in sink, you are in the right place. Our collection of sinks consists of various styles and materials that can fit any kitchen without a doubt! You can access the full collection here.

    This article hopes to clear all your doubts about the drop-in sink and its installation.