How do I install a lavatory faucet?

The 4' lavatory faucet without a pop-up drain is relatively simple to install.

  • Place plumber's putty in the groove just underneath the chrome framing to provide a tight seal (see image).
  • Insert the shanks of the lavatory faucet into the holes of the lavatory. Attach the locknuts and the washer to the shank and tighten them firmly into place.
  • Remove any excess putty from the base of the faucet. Connect the shank to the water supply and tighten.

Installing the 4' lavatory faucet with pop-up drain is more challenging. Start by carefully reading the instructions that came with the faucet.

  • First, remove the old faucet and pop-up drain.
  • Insert the new faucet into position. Add putty in the groove around the base of the faucet.
  • Slip the washer over the shank and thread the locknut up the shank, placing the faucet loosely in position.
  • Insert the drain plunger into the center hole and affix the adjustment bar to the drain plunger.
  • Place the pop-up drain body in position and attach it to the adjustment bar. Tighten all nuts and attach the faucet to the water system. Attach the pop-up drain body to the drain system.
  • Place the stopper in the drain body and work the drain plunger. Make any adjustments by moving the lever assembly up or down in the holes provided.

Installing the combination lavatory faucet with pop-up drain is much the same as the 4' lavatory faucet.

  • The main difference in this installation is that most models require the faucet handles, flanges and faucets to be removed. The assembly is then inserted from underneath the lavatory frame.


Check your state and local codes before starting any project. Follow all safety precautions. Information in this document has been furnished by the North American Retail Hardware Association (NRHA) and associated contributors. Every effort has been made to ensure accuracy and safety. Neither NRHA, any contributor nor the retailer can be held responsible for damages or injuries resulting from the use of the information in this document.

Check your state and local codes before starting any project. Follow all safety precautions. Every effort has been made to ensure the accuracy and safety of this information. Neither Westlake nor any contributor can be held responsible for damages or injuries resulting from the use of the information in this document.

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