How To Replace and Install an Undermount Kitchen Sink 2024

To remove an undermount kitchen sink, start by disconnecting the plumbing and turning off the water supply. Then, use a putty knife to loosen the sealant between the sink and the countertop.

Finally, lift the sink out of the installation brackets and gently pull it downward until it detaches. Removing an undermount kitchen sink is a straightforward process that requires basic plumbing knowledge and some handy tools. Whether you’re renovating your kitchen or replacing a damaged sink, read on to learn the step-by-step instructions for removing an undermount sink and ensuring a successful DIY project.

How To Remove An Undermount Kitchen Sink

How To Remove An Undermount Kitchen Sink

Gather The Necessary Tools

Before beginning the process of removing an undermount kitchen sink, it’s essential to gather the necessary tools for a smooth and efficient experience. Having the right tools at hand can save time and frustration during the removal process.

Drainage Tools

When removing an undermount kitchen sink, you will need specific tools to address the drainage components. Ensure you have a pair of adjustable pliers to disconnect the water supply lines and a bucket to catch any residual water in the pipes. Additionally, a pipe wrench may be necessary to remove the drain fittings securely.

Safety Gear

Prioritize safety by wearing the appropriate gear during the removal process. This should include protective gloves to shield your hands from sharp edges and potential debris, as well as safety goggles to safeguard your eyes from any harmful particles. It’s also advisable to wear a dust mask to prevent inhaling any dust or particles during the removal.

Turn Off The Water Supply

To remove an undermount kitchen sink, start by turning off the water supply. This will prevent any water from flowing while you work on the sink removal process.

Before you start removing your undermount kitchen sink, it’s crucial to turn off the water supply. This ensures that you avoid any potential leaks or water damage during the process. To do this, follow the steps below:

Locate water shut-off valves.

Firstly, locate the water shut-off valves underneath your kitchen sink. These valves are usually located on the water supply lines that come up from the floor or through the wall. Look for two separate valves, one for hot water and one for cold water.

Turn off the water supply.

Once you’ve located the water shut-off valves, turn them clockwise until they are fully closed. This will stop the flow of water to your kitchen sink, preventing any water from coming out during the removal process. It’s essential to ensure that each valve is turned off entirely for both hot and cold water. By doing so, you eliminate the risk of any accidental water leakage when disconnecting the sink.

Remember, turning off the water supply is an essential step in the process of removing an undermount kitchen sink. By taking this precaution, you can proceed with confidence, knowing that you’re minimizing the risk of water damage and making the removal process smoother. Now that you have successfully turned off the water supply, you are ready to move on to the next step in removing your undermount kitchen sink.

Disconnect The Plumbing

When it’s time to remove an undermount kitchen sink, one crucial step is to disconnect the plumbing. This step is necessary to ensure a smooth and hassle-free removal process. In this section, we will guide you through the process of disconnecting the plumbing, including removing the P-trap and detaching the supply lines. By following these instructions, you’ll be well on your way to successfully removing your undermount kitchen sink.

Remove The P-trap

The first part of disconnecting the plumbing involves removing the P-trap. The P-trap is a curved pipe that is essential for preventing sewer gases from entering your kitchen. Here’s how to remove it:

  1. Place a bucket or a pan underneath the P-trap to catch any water or debris that may spill out during the process.
  2. Using a wrench or pliers, loosen the nuts on both ends of the P-trap. These nuts connect the P-trap to the drain and the sink tailpiece.
  3. Once the nuts are loosened, carefully remove the P-trap and empty its contents into the bucket or pan.
  4. Inspect the P-trap for any clogs or debris and clean it if necessary.
How To Remove An Undermount Kitchen Sink

Detach The Supply Lines

The next step in disconnecting the plumbing is to detach the supply lines. The supply lines are responsible for delivering hot and cold water to your kitchen sink. Follow these steps to detach them:

  1. Please turn off the water supply valves under the sink by twisting them clockwise. This will prevent any water from flowing while you disconnect the supply lines.
  2. Using an adjustable wrench, loosen the nuts that secure the supply lines to the faucet and shut off the valves.
  3. Once the nuts are loosened, gently pull the supply lines away from the faucet and shut off the valves.
  4. Inspect the supply lines for any damage or leaks. If necessary, replace them with new ones.

By following these steps to disconnect the plumbing, you’re well on your way to removing your undermount kitchen sink. With the P-trap removed and the supply lines detached, you’re one step closer to completing the removal process and potentially installing a new sink. Stay tuned for the next section, where we’ll guide you through the steps of removing the sink from its mounting brackets.

Remove The Sink Clips

When it comes to removing an undermount kitchen sink, one essential step is to remove the sink clips. Sink clips are used to keep the sink securely in place and need to be carefully unscrewed to release the sink from the countertop.

Locate The Sink Clips

First, locate the sink clips underneath the countertop. These are typically mounted on the underside of the sink and are used to secure it in place. Use a flashlight if necessary to get a clear view of the clips.

Use A Screwdriver To Unscrew The Clips

With a screwdriver, carefully unscrew the clips that are securing the sink. Ensure that you support the sink properly as you loosen the clips to prevent it from dropping. It’s essential to unscrew all the clips to release the sink from the countertop fully.

Detach The Sink From The Countertop

To remove an undermount kitchen sink, start by detaching it from the countertop. First, locate the clips securing the sink and use a screwdriver to loosen them. Once the clips are removed, carefully lift the sink away from the countertop.

When it comes to removing an undermount kitchen sink, the first step is to detach it from the countertop. This can be tricky, but with the right approach, it can be done smoothly and effortlessly. Follow these steps to ensure a seamless sink removal process:

Carefully Lift The Sink

To begin with, carefully lift the sink from its position on the countertop. This might require some strength, so make sure to take proper precautions. It’s always advisable to have a helping hand to provide extra support while you lift the sink.

Start by locating the sink mounting brackets underneath the countertop. These brackets are usually attached with screws or clamps, so find the appropriate tools to remove them. Once the brackets are loosened or removed, the sink will be ready to lift. Be cautious and take note of any plumbing connections or electrical wires that might be attached to the sink. Ensure that they are safely detached or disconnected before lifting.

Remove Any Silicone Adhesive

After the sink is lifted, you need to remove any silicone adhesive that might be holding it firmly in place. This adhesive is often used to provide extra stability and prevent water leakage. Start by carefully scraping away the adhesive using a putty knife or a similar tool. Be gentle while doing this to avoid damaging the countertop or sink.

If the adhesive is stubborn and doesn’t quickly come off, you can use a silicone remover or adhesive solvent. Apply the remover or solvent as per the instructions provided, and let it sit for a few minutes. This will loosen up the adhesive, making it easier to scrape off. Once the adhesive is completely removed, clean the area thoroughly with a mild detergent and warm water.

By following these steps, you will be able to detach your undermount kitchen sink from the countertop effectively. Remember to exercise caution and take your time during the process to avoid any damage. With a bit of patience and the right tools, you can successfully remove your kitchen sink and move on to your next renovation project with ease.

How To Remove An Undermount Kitchen Sink

How To Remove An Undermount Kitchen Sink

Frequently Asked Questions For How To Remove An Undermount Kitchen Sink

How Do You Remove An Undermount Kitchen Sink?

  1. Start by disconnecting the plumbing and turning off the water supply.
  2. Use a utility knife to cut the caulk seal around the edges of the sink.
  3. Carefully lift the sink out of the countertop and clean the area before installing a new sink.

What Tools Do I Need To Remove An Undermount Kitchen Sink?

To remove an undermount kitchen sink, you will need a few tools, including a wrench, pliers, utility knife, screwdriver, and a caulk gun. These tools will help you disconnect the plumbing, remove screws or brackets holding the sink in place, cut the caulk seal, and perform the necessary tasks during the removal process.

Can I Remove An Undermount Kitchen Sink Without Professional Help?

Yes, you can remove an undermount kitchen sink without professional help. With the right tools and knowledge, you can safely disconnect the plumbing, cut the caulk seal, and lift out the sink. However, it’s essential to take precautions and follow proper procedures to avoid damaging the sink or the surrounding countertop.


Removing an undermount kitchen sink can seem daunting, but with the right tools and steps, it’s a manageable task. Whether you’re renovating or simply replacing the sink, following the proper procedures is essential. By understanding the process, you can ensure a successful removal and replacement without any unexpected complications.

With these straightforward instructions, you’ll be able to tackle this project with confidence.

Leave a Comment