Apply Teflon Tape — Clean and Prepare the Pipe
Part of project
How to Replace a Leaky Bathtub Spout (Thread-on vs. Slip-on) · Step 4 of 6
In this video
Whether you are reinstalling the cleaned old spout or installing a new one, the pipe threads must be prepared. Take a roll of Teflon tape and wrap it around the threads of the pipe that is attached to the spout. Wrap the tape in a clockwise direction, which is the same direction you will tighten the spout. This prevents the tape from bunching up or unwrapping during installation and ensures a tight, waterproof seal.
Goal: Seal the pipe threads to prevent leaks
- Wrap the tape in the same direction you will tighten the spout (clockwise) to prevent it from unwrapping during 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.
Apply Teflon Tape — Clean and Prepare the Pipe
Part of project
How to Replace a Leaky Bathtub Spout (Thread-on vs. Slip-on) · Step 4 of 6
In this video
Whether you are reinstalling the cleaned old spout or installing a new one, the pipe threads must be prepared. Take a roll of Teflon tape and wrap it around the threads of the pipe that is attached to the spout. Wrap the tape in a clockwise direction, which is the same direction you will tighten the spout. This prevents the tape from bunching up or unwrapping during installation and ensures a tight, waterproof seal.
Goal: Seal the pipe threads to prevent leaks
- Wrap the tape in the same direction you will tighten the spout (clockwise) to prevent it from unwrapping during 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.