How to Install a Pedestal Sink in a Bathroom

Updated February 21, 2017

Adding a pedestal sink to a bathroom is a wise decision. They overflow with style, beauty and elegance and add charm to any home. They are also not very difficult to install, with a little carpentry and plumbing know-how. When you are finished shopping around for the perfect pedestal sink, take it home, remove it from its packaging and be sure all of the parts are there. Then begin the process of installing your new pedestal sink.

Install an anchoring plate in the studs where the sink will be installed before covering the studs with drywall and finishing the drywall. Cut 2-by-4 or 2-by-6 lumber to fit in between the wall studs and either nail or screw them into place. Install the drywall and finish normally. If the bathroom is already finished, plan on using drywall anchors to anchor the sink to the wall (Steps 3 and 4).

Place rubber bumpers on the bottom of the sink where the sink and the pedestal will meet to reduce the effects of shock and friction between the two components. Install the faucet onto the sink according to manufacturer specifications.

Gently place the sink on top of the pedestal and position the sink and pedestal against the wall where it is to be installed. Be sure the sink is level. Mark the wall where the anchors need to be predrilled, and mark the floor where the pedestal anchor will be installed.

Predrill the holes for the anchors in the floor and the wall. Put the sink and the pedestal back into place where the anchor holes were predrilled, and add the anchors to the holes. Tighten the anchors to the wall and the floor, but do not overtighten the anchors, or the porcelain will crack.

Attach the water supply lines to the water shut-off valves coming out of the wall, and then attach the supply lines to the hot and cold sides of the water faucet installed in the sink. Tighten the fittings with a crescent wrench.

Run the drain pipes, installing the P-trap in between the drain pipe exiting the sink and the drain pipe entering the wall. Cut the drain pipes to fit as needed. Tighten the drain pipes by hand.

Slowly turn the shut-off valves on. Turn the faucet in the sink on and allow the water to flow for a minute. Check all of the water connections for leaks.

Things You'll Need

  • Pencil
  • Tape measure
  • Crescent wrench
  • Drill
  • Safety glasses
  • Level
  • Lag bolts and washers
  • 2-by-4 or 2-by-6 lumber
  • Water supply lines
  • Bathroom sink drain pipes
  • P-trap
Cite this Article A tool to create a citation to reference this article Cite this Article

About the Author

Josh surprisingly found himself as an English Literature major one day after planning on becoming a doctor for most of his life. He graduated with a BS from Utah Valley University in April 2003.