How to Install a Bathtub Faucet

Install a Bathtub Faucet
Install a Bathtub Faucet (Image: A. Johnson)

A bathtub spout or faucet comes in two basic styles. The set-mounted spout has a hole on the bottom of the faucet and it is mounted with a set screw. In this type of spout, the fitting is moved over the pipe unit it is against the wall, and a set screw is tightened. The other common spout type is the screw-on. With a screw-on there is no set screw, and the faucet is screwed into place, which can be more difficult to square.

Things You'll Need

  • Bathtub spout
  • Small screwdriver
  • Pipe wrench
  • Joint compound
  • Water-pump pliers
  • Tape
  • Silicone caulk

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Remove the old faucet if you are replacing it with a new one. To do this, loosen the screw on the bottom of the spout if it is a set-mount and slide off the pipe. If it a screw-on style, unscrew the spout from the threaded pipe, using a pipe wrench.

Paint joint compound around the outer edge of the pipe.

Slide the new faucet over the pipe, fitting firmly against the wall. If it is a set mount, tighten the screw until it is firmly attached. If it is a screw-on, screw the faucet over the pipe. Tighten the screw-on type using water-pump pliers that have been covered with cloth or tape to prevent scratching.

Run silicone caulk around the edge where the spout butts up against the wall.

Tips & Warnings

  • Be careful when removing the old spout as not to bend or damage the pipe or nipple.
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