Symptoms
- Spout moves up, down, or sideways when touched
- Water may leak slightly from behind the spout
- Spout doesn't stay in one position
- No issue with water flow itself
Likely causes
- CommonLoose setscrew on a slip-fit spoutMany spouts slide onto a copper pipe stub and are held by a small hex setscrew underneath.
- CommonSpout not threaded on tightly (threaded style)Threaded spouts can back off over time if not tightened enough during installation.
- PossibleWorn or missing washer/O-ring at the wall connectionA degraded seal can let the spout sit loosely against the wall even if otherwise secure.
- Less commonDamaged or stripped threads on the pipe nippleIf the underlying pipe threads are worn, no amount of tightening will fully secure a threaded spout.
What to do
- Determine the spout type: look underneath for a small setscrew (slip-fit) or try turning the spout itself (threaded).
- For a slip-fit spout, use a small hex/Allen key to loosen the setscrew, push the spout fully against the wall, then retighten the screw.
- For a threaded spout, remove it by turning counterclockwise, wrap the pipe threads with fresh plumber's tape, and reinstall, turning clockwise until snug.
- Check that the spout sits flush against the wall with no gap.
- Run the tub faucet briefly to check for any leaking at the wall connection.
- If it remains loose after these steps, the underlying pipe nipple may be worn and need replacement.
- Consider applying a small bead of caulk around the base against the wall for a finished, sealed look.
Tools and parts
- Allen key set
- Adjustable wrench
- Plumber's tape
Tub spout replacementSearch: “tub spout replacement”
When to call a pro
Call a plumber if the pipe nipple behind the wall is stripped or damaged, since that requires opening the wall.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.