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Prepare New Shower Arm — Install the New Shower Spigot

Beginner2 hours

Part of project

Shower Spigot Replacement: A Step-by-Step DIY Guide · Step 3 of 4

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Prepare the new shower arm for installation. Take a roll of Teflon tape and wrap it around the threads of the arm that will screw into the wall. Wrap the tape tightly in a clockwise direction three to four times. Wrapping clockwise ensures the tape doesn't unravel as you tighten the arm.

Goal: Apply Thread Sealant

  • Using a longer shower arm can provide more threads for a secure connection inside the wall, especially if the fitting is recessed.
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FAQs

What kind of plumber's tape should I use, and why is it important for the shower arm threads?

You should use PTFE (polytetrafluoroethylene) plumber's tape, also known as thread seal tape. It creates a watertight seal, prevents leaks, and lubricates the threads, making it easier to tighten without overtightening. Wrap it clockwise around the threads 3-5 times before screwing on the new spigot, ensuring full coverage.

What should I do if the old shower spigot is stuck or won't easily unscrew?

First, ensure the water supply is completely off. If the spigot is stuck, try applying a penetrating oil to the threads and let it sit for 10-15 minutes to help loosen corrosion. For stubborn fixtures, a pipe wrench might provide more leverage than an adjustable wrench, but always be careful not to damage the piping within the wall.

How important is turning off the water supply, and what could go wrong if I skip this step?

Turning off the water supply is absolutely critical; skipping this step will result in a significant and immediate flood once you begin removing the old spigot. Always locate and turn off the dedicated shower shut-off valves first, or the main house water supply if none are available for the shower. Failure to do so can cause extensive water damage and make the project impossible to complete safely.

I'm a complete beginner; is the 'beginner' difficulty rating realistic, or should I hire a pro?

This project is rated beginner because it primarily involves basic tools and straightforward steps of unscrewing and re-screwing. However, it requires careful attention to detail, especially with water shut-off and leak testing. If you're comfortable with basic mechanical tasks and following instructions, you can successfully tackle it, but don't hesitate to call a professional if you encounter unexpected issues or feel unsure.

Transcript
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When installing the new shower arm, you will want to use a longer version of the arm that will go into the wall. You will need to apply some Teflon tape in a clockwise rotation about three to four rounds, so it will look like this.

Auto-generated transcript. May contain errors.