Installing Pedestal Sink
Set the basin and pedestal in place. Install the fixture and plumbing. Brace the basin with a 2x4. Outline the base of the pedestal on the floor with a pencil. Mark the floor with the location of the holes for the lag screws. Set the basin and pedestal aside. Drill holes in the floor for the lag screw.
Install the pedestal lag bolts, making sure they are snug. Do not overtighten; you could crack the base. Apply a bead of silicone caulk around the base. Install the faucet, then connect the supply lines and drain before you attach the basin to the wall so you will have some play to make the hookup.
Connect the basin to the wall. Predrill a small hole through the blocking, then insert and alternately tighten the lag screws until just snug, do not over tighten. Caulk the back of the basin with silicone caulk. Remove the brace and test the system for leaks.
