From Old to New: A Step-by-Step Guide to a DIY Vanity Replacement

By | October 19, 2025

From Old to New: A Step-by-Step Guide to a DIY Vanity Replacement

Are you tired of looking at your outdated bathroom vanity? Replacing it can be a great way to update the look and feel of your bathroom, and with the right tools and a bit of elbow grease, you can do it yourself. In this article, we’ll walk you through the process of replacing your old vanity with a new one, from preparation to completion.

Preparation is Key

Before you start, make sure you have the following:

  • A new vanity that fits your bathroom’s style and measurements
  • A shut-off wrench or basin wrench
  • Adjustable wrench or basin wrench
  • Channel-type pliers (for removing old faucet and drain)
  • Teflon tape
  • Plumbing supply lines
  • Silicone adhesive (for sealing any gaps)
  • A level
  • A drill (for making any necessary holes)

Step 1: Shut Off the Water Supply

The first step in any plumbing project is to shut off the water supply to the area you’ll be working on. Locate the shut-off valves under the sink and turn them clockwise to shut off the water supply. Open the faucet to drain the water from the pipes.

Step 2: Disconnect the Water Supply Lines

Use an adjustable wrench or basin wrench to loosen the nuts that hold the water supply lines to the faucet. Once loose, you should be able to remove the lines from the faucet. Use a bucket to catch any remaining water that may spill out.

Step 3: Remove the Old Faucet and Drain

Use channel-type pliers to loosen and remove the old faucet and drain. You may need to use a bit of force to break the old adhesives, but be careful not to damage the surrounding area.

Step 4: Remove the Old Vanity

Use a screwdriver to remove the screws that hold the old vanity to the wall. Gently pull the vanity away from the wall, taking care not to damage the surrounding tile or flooring.

Step 5: Prepare the Area for the New Vanity

Clean the area where the old vanity was removed, making sure to remove any old adhesive or debris. Use a level to ensure the floor is even and the walls are plumb.

Step 6: Install the New Vanity

Place the new vanity in position, ensuring it is level and secure. Use screws to attach the vanity to the wall, making sure they are tightened firmly.

Step 7: Connect the Water Supply Lines

Attach the water supply lines to the new faucet, making sure they are securely tightened. Use Teflon tape to create a watertight seal.

Step 8: Install the New Faucet and Drain

Install the new faucet and drain, following the manufacturer’s instructions. Use channel-type pliers to secure the faucet and drain in place.

Step 9: Test the Water Supply

Turn on the water supply and check for any leaks. Run the faucet to test the water pressure and temperature.

Step 10: Seal Any Gaps

Use silicone adhesive to seal any gaps between the vanity and the wall, or between the faucet and the sink.

Tips and Tricks

  • Make sure to measure your bathroom carefully before purchasing a new vanity to ensure it fits comfortably in the space.
  • Consider hiring a professional if you’re not comfortable with plumbing or DIY projects.
  • Use a vanity with a built-in countertop to simplify the installation process.
  • Don’t forget to turn off the water supply before starting the project!

Conclusion

Replacing your old vanity with a new one can be a great way to update the look and feel of your bathroom. With the right tools and a bit of patience, you can complete this project yourself, saving money and gaining a sense of accomplishment. Follow these steps and tips to ensure a successful DIY vanity replacement, and enjoy your new and improved bathroom!