Bathroom Vanity Installation and Upgrading Tips

We all know that your bathroom vanity is one of the most utilized fixture in your household, and there are many ways to upgrade and/or “beautify” it in DIY fashion.  However, updating your sink can be a daunting task if you do not have the proper instructions.

There are numerous videos and articles online that will help you with just about any bath improvements and projects you may want to start.  In the following article by Richard Trethewey of Ask This Old House TV, he explains in detail how to install and upgrade a bathroom vanity.

How to Upgrade a Bathroom Vanity


  1. Shut the hot and cold water lines off.
  2. Disconnect the sink from the P-trap and break the hose connections to the faucet.
  3. Use the utility knife to break the seal between the sink and the countertop. Then, carefully pry the sink away from the countertop with a hammer and a pry bar.
  4. Remove the screws holding the vanity to the wall and remove the vanity.
  5. Shut the water off to the house and cut the hot and cold water lines. Cut the P-trap as well. This will make it so only small holes need to be cut in the back of the new vanity.
  6. Measure the distance from the wall to the hot line and cold line. Next, measure the distance from the floor to the hot and cold lines. Transfer these measurements to the back of the vanity and cut out holes with the hole saw.
  7. Move the new vanity into place. Check it for level and screw it into the wall.
  8. Connect new shutoff valves to the hot and cold lines.
  9. Flip the countertop upside down and mount the sink to the countertop with silicone caulking and sink clips.
  10. Connect the faucet to the countertop using the plumber’s putty and the mounting brackets.
  11. Connect the hot and cold water lines to the faucet, then connect the drain pipe and the pop-up drain.
  12. Once all the connections are made, flip the counter right side up and place it on the cabinet.
  13. Make a new P-trap connection with the drain and connect the hot and cold water lines to the shutoff valves.
  14. Turn the water back on.

All the tools Richard used for the project, including wrenches, plumber’s putty, and PVC glue, can be found at home centers and plumbing supply stores.

The vanity and countertop were custom-ordered by the homeowner.

So there it is…You are now equipped with the proper instructions to proactively replace your bathroom vanity and have the experience and knowledge to take on future projects. Just be careful, you may find yourself wanting to take on more and more home improvement tasks.

If you are also interested in refinishing your bathtub or shower, don’t forget to visit for more information.

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