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How to Install a Pedestal Sink

Create a more open look for your bathroom by installing an affordable, stylish pedestal sink. Pedestal sinks take up much less space than a traditional sink and vanity. It's a good idea to have a helper for this project, since the sinks can be heavy.

Basic Considerations

Pedestal sink

Pedestal sinks come in two pieces -- the stand (pedestal) and the sink itself. The plumbing fits inside the pedestal, which is secured to the floor. The sink is mounted to the wall and also rests on the pedestal stand.

Before you decide to purchase, here are some things to think about:

  • Installing one is a little more involved than a regular drop-in or wall-mount sink. Fitting the plumbing inside the pedestal can be close work. Also, matching the sink to the proper level on the wall and the exact height of the pedestal requires precise measurements.
  • Decide whether you can live without the storage space of a vanity cabinet. The countertop and cabinet are going away, but shelving or recessed medicine cabinets can compensate for some lost cabinet space.
  • If you are removing an old vanity, the floor and wall will probably require some attention. The water supply lines also may need to be relocated. If the plumbing needs to be rerouted, it's best to call a professional to complete this work.
  • For further questions, refer to the sink's installation instructions.

Shop Pedestal Sinks


Step 1

Place a bucket under the pipes to catch the excess water.

To remove your old vanity, turn off the water supply and turn on the faucet to relieve pressure in the lines.

Loosen the nuts to remove the drain pipes. Place a bucket underneath the pipes to catch any excess water. Then disconnect the water lines from the valves.


Step 2

Remove the top and the vanity base.

Cut the sealant along the backsplash. Remove the backsplash if it’s a separate piece from the vanity top. If your vanity is secured to the wall with screws, removal will be easier if you take off the vanity top.

Separate the top from the vanity with a putty knife. Lift it off and back out the screws that are securing the vanity to the wall.

Step 3

With the old vanity out you can make plumbing repairs, such as moving the supply lines and drain. Consider installing new plumbing, since it will be visible.

Step 4

Add a support board to secure the sink to the wall.

Some pedestal sinks require a support board behind the finished wall for extra strength. Check the manufacturer's instructions on your sink. Here’s how to install it:

  • Mark the sink height on the wall.
  • Cut out part of the wallboard to reveal the studs.
  • Notch the studs for the support board with a jigsaw. The support board will need to be flush with the studs if you’re covering with only drywall. If you’re covering the wall with additional layers, such as bead board or tile, consider making the support board flush with the drywall.
  • Secure the support board to the notched studs with screws.


Step 5

Replace the old wall panel or tile if it's damaged.

Then repair the wall surface. This is an ideal time to paint or to install wall tile or new flooring.

Follow our step-by-step instructions:
Paint a Room
Patch and Repair Drywall
Install Wall Tile
DIY Flooring Projects


Step 6

Mark your guides on the floor.

Mark the centerline of the sink on the wall and floor. Then make a mark 10 inches from the wall – accounting for the baseboard. (This distance for this mark may vary with different sinks.)

Center the pedestal on the mark and set the sink tight against the wall.


Step 7

Make sure that the sink is level.

Check to ensure it's level and adjust the pedestal as needed. Some manufacturers include adhesive gaskets to be placed on the underside of the bowl to help level it.


Step 8

Mark the sink's anchor holes on the wall.

Mark the sink’s anchor holes on the wall and the pedestal hole on the floor. Move the sink and pedestal aside, and drill the three holes.


Step 9

Install hanger bolts in the wall.

Install hanger bolts in the wall, leaving about 1 inch extending from the wall.

Secure the pedestal to the floor with a lag bolt and washer. Don’t overtighten.

Good to Know

Screw on the cap nut and use a socket wrench to install the hanger bolts.

Step 10

Make sure the sink is level.

Attach the faucet and drain before setting the sink bowl in place.

Position the bowl over the hanger bolts, level it, and secure it with cap nuts and washers. Again, don’t overtighten.


Step 11

Reconnect the drain and water supply and check for leaks.

Good to Know

Wrap your tools with tape to protect decorative parts.

Good to Know

Consider adding a new mirror and lighting fixture to match the look of your new sink.

Shop Bathroom Lighting
Shop Bathroom Mirrors