Install the New Spout — Seal and Test for Leaks
Part of project
How to Replace a Leaky Bathtub Spout (Thread-on vs. Slip-on) · Step 6 of 6
In this video
Installing the new spout is a straightforward process. First, ensure the brass adapter and its O-ring on the wall pipe are clean and undamaged. For a better seal, apply a light coat of silicone-based plumber's grease to the O-ring. Align the new spout with the adapter and slide it on firmly until it sits flush against its base plate. Then, rotate the body of the tub spout clockwise to thread it onto the base, which will pull it tight against the wall. If there is a set screw, tighten it to secure the spout. Finally, turn on the water to check for any leaks around the base and test the diverter's function.
Goal: Plumbing Fixture Installation
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FAQs
What is the difference between a thread-on and slip-on bathtub spout?
A thread-on spout screws directly onto a threaded pipe nipple coming from the wall. A slip-on spout slides over a copper pipe and is secured with a set screw underneath. Check your existing spout type before buying a replacement.
How do I know if my bathtub spout is leaking from the diverter or the connection?
If water drips from the spout when the shower is running, the diverter is failing. If water leaks around where the spout meets the wall, the connection or seal needs attention. Both issues require removing the spout.
What tools do I need to replace a bathtub spout?
For most spout replacements, you will need a hex key or Allen wrench (for slip-on types), pipe wrench or adjustable pliers (for thread-on types), plumbers tape, and silicone caulk for sealing.
Can I replace a bathtub spout myself without calling a plumber?
Yes, this is typically a DIY-friendly project that takes about 30 minutes. The key is identifying your spout type first and having the right replacement part.
Install the New Spout — Seal and Test for Leaks
Part of project
How to Replace a Leaky Bathtub Spout (Thread-on vs. Slip-on) · Step 6 of 6
In this video
Installing the new spout is a straightforward process. First, ensure the brass adapter and its O-ring on the wall pipe are clean and undamaged. For a better seal, apply a light coat of silicone-based plumber's grease to the O-ring. Align the new spout with the adapter and slide it on firmly until it sits flush against its base plate. Then, rotate the body of the tub spout clockwise to thread it onto the base, which will pull it tight against the wall. If there is a set screw, tighten it to secure the spout. Finally, turn on the water to check for any leaks around the base and test the diverter's function.
Goal: Plumbing Fixture Installation
Frequently Asked Questions
What is the difference between a thread-on and slip-on bathtub spout?
A thread-on spout screws directly onto a threaded pipe nipple coming from the wall. A slip-on spout slides over a copper pipe and is secured with a set screw underneath. Check your existing spout type before buying a replacement.
How do I know if my bathtub spout is leaking from the diverter or the connection?
If water drips from the spout when the shower is running, the diverter is failing. If water leaks around where the spout meets the wall, the connection or seal needs attention. Both issues require removing the spout.
What tools do I need to replace a bathtub spout?
For most spout replacements, you will need a hex key or Allen wrench (for slip-on types), pipe wrench or adjustable pliers (for thread-on types), plumbers tape, and silicone caulk for sealing.
Can I replace a bathtub spout myself without calling a plumber?
Yes, this is typically a DIY-friendly project that takes about 30 minutes. The key is identifying your spout type first and having the right replacement part.