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Test System for Leaks — Test for Leaks and Diverter Function

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Bathtub Spout & Diverter Replacement: A Complete DIY Guide · Step 5 of 5

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After all plumbing connections are complete and the solder has cooled, turn the main water supply back on slowly. Temporarily cap the tub spout pipe. Operate the shower valve to direct water into the tub and allow it to fill completely, up to and slightly into the overflow drain. Carefully inspect all new connections—the drain, the P-trap, and all soldered joints on the shower valve—for any drips or leaks. Once the test is successful, drain the tub and perform a final visual inspection.

Goal: Test for Leaks

  • Place a dry paper towel under each connection; it will make even the smallest drip immediately visible.

Used in this video

  • Temporary pipe capBlocking the tub spout outlet to force water into the tub for testing.
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FAQs

How difficult is replacing a bathtub spout and diverter for a DIY beginner, and how long does it usually take?

This is a beginner-friendly project, often taking only 30-60 minutes. The most challenging part can be removing a stubborn old spout or ensuring a leak-free seal on the new one. No specialized skills beyond basic tool use are typically required.

Besides the listed tools and materials, are there any other essentials or helpful items I should have on hand?

It's highly recommended to have Teflon tape (pipe thread tape) for screw-on spouts, even if using plumber's putty for the base. A small bucket, rags, or a towel can also be useful for catching any residual water when the old spout is removed from the pipe. Having a flashlight can also help inspect the pipe.

What critical safety steps should I follow, especially regarding water and potential leaks?

Always ensure the main water supply to the bathtub is completely shut off before starting to prevent flooding. After installation, turn the water back on slowly and carefully inspect for any leaks around the spout connection immediately. Have towels ready to quickly address any drips or leaks.

What are the most common mistakes beginners make when replacing a bathtub spout, and how can I avoid them?

A common mistake is not thoroughly cleaning the copper pipe threads, which can lead to leaks. Another is overtightening the new spout, potentially damaging the pipe or spout itself; tighten firmly but not excessively. Ensure you use the correct type of sealant (Teflon tape or plumber's putty) for your specific spout type.

Transcript
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It's like a telephone. Oh yes, she said and she pulled out her cell phone and handed it to me smiling, bro. What the fuck now I'm confused? Did she think I'm trying to bag her? Am I supposed to put my number in there? After an awkward silence, I decided to skip the handheld, so we kept off the third port on the shower and test the bathtub all the way to the overflow.

Auto-generated transcript. May contain errors.