How to Install a Pedestal Sink

Learn how to install a pedestal sink. Follow instructions step by step of the installation procedure from removing the old sink, and connecting the new pedestal sink.

The Process of Install a Pedestal Sink

A pedestal sink is the primary necessity of each bathroom. You need to have it in your bathroom too.

A pedestal sink has two separate parts:

  • A pedestal or stand
  • The sink body

The pedestal serves two purposes:

  • It houses the plumbing assembly like the drainpipe.
  • It provides support to the sink body.

Here is a step-by-step guide on how to install a pedestal sink for you to help in your next installation project.

Things You Will Need

In order to complete your project successfully and in a short time, you need to have a few tools at hand. It’s better to make a single run to the hardware store and purchase everything needed once.

This will save your resources like time, money, energy, and likewise. Some of the tools you will need are

  • Screwdriver
  • Socket wrench
  • Pipe wrench
  • Putty knife
  • Gloves
  • Nuts
  • Washers
  • Cap nuts
  • Hanger bolts
  • Lag bolt
  • Pedestal Sink

Step 1: Disconnect the Water Lines

The first step in the installation process of a sink is always the disconnection of water supply lines. In this case, too, you have to turn off the water valves and take off everything that has any links to the old sink and faucet. When you are doing this, just place a bucket or a small pot to catch the leftover water from the pipes.

Step 2: Cut the Sealant

When you are going to remove the old sink, you have to see what is binding it in place. It can be sealant or screws. A sealant will require cutting using a cutting tool; however, you can simply remove the screws using a screwdriver. This way the sink will come off easily. Now you can lift it and place it aside. A putty knife cuts the sealant and separates the sink top from the rest of the body.

Step 3: Prepare the Wall for Installation

Now is your time to make any plumbing repairs. As the wall is free from the vanity and you are ready to install a new one, your way is clear to make any necessary changes in the connections or whatever you have planned to do.

Now choosing the style of the new pedestal sink is totally up to you. Some require a board on the finished wall behind for support and extra strength purposes. You can consult the user manual for this.

After marking the height on the wall where you have to install the sink, measure the wallboard and cut it out. Now the studs are visible to you. Place the support board on it and use screws to tighten them together.

Step 4: Make the Measurements

Grab a pencil and ruler to do some marking on the floor and wall. First, you have to mark the line on the floor, which will be the center of the sink. Do the same on the wall. Second, you will place a mark a few inches say 10 inches away from the wall for the baseboard (this distance varies from sink to sink).

Now make the stand/pedestal upright on the center and place the sink body atop it.

Step 5: Place the Sink

When you have placed the pedestal sink in the right place, check once more to ensure that it is lined-up on a centerline. If it is not, adjust it accordingly. Sometimes the sink has adhesive gaskets, which help in leveling the bowl. This gasket is present on the underside of the bowl.

Step 6: Make Holes for Connections

Now is the time to make holes for further connections. You need to drill holes in the wall and one on the floor. In the wall, two holes are for sink anchoring; in the floor, the hole is for the pedestal. While marking the areas for holes, you have to keep the pedestal and sink in place. Later, you will place them aside and use a drill machine to drill holes in the marked areas.

Step 7: Place the Bolts

The next step is to place ‘hanger bolts’ in the wall using the socket wrench. These bolts, extending about 1 inch out of the wall, are for the sink body. A lag bolt and washer are there to hold the pedestal securely to the floor.

Step 8: Attach the Faucet Assembly

No, the work is not over yet. Have you forgotten all about attaching the faucet and the drainpipe? Yes, look at the guides I have provided you on installing a faucet and following it remake the connections.

When the faucet and drainpipe are in place, lift up the bowl/sink body and position it over the hanger bolts. Adjust its level before making the securing connections. Once it is on the level, use cap nuts and washers to secure it to the studs. Remember a key point in installing anything that over-tightening will do you no good.

Step 9: Remake the Water Line Connections

Yep! You are almost there. With the faucet and drain in place, sink and pedestal set upright, the work is almost complete. All you need to do is to remake the water connections. Don’t forget them out. Otherwise, later you will keep on turning the faucet handle and won’t know what is the problem.

Lie under the sink and remake the connections to the faucet using a wrench and screwdriver.

Step 10: Perform the Final Check

When everything is complete, simply turn the faucet handle. Water will start to flow out. If there is any leak in the pipes under the sink, shut off the water and adjust the connections as I have discussed in my other posts.  Your pedestal sink is now all ready for you to use.


I hope you found this guide really useful and simple. Share the information ahead with everyone to benefit from it. Don’t forget to provide your feedback in the comments box.