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Test for leaks — Thoroughly Test for Leaks

Beginner4 hours

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Shower Fixture Installation & Replacement: A Complete DIY Guide · Step 5 of 5

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In this video

Turn the water on slowly and check for leaks at the shut-off valve and the supply line connection.

Goal: Verify leak-free installation

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This Old House

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FAQs

The project difficulty is listed as 'beginner' and estimated at 4 hours. Is this realistic if I've never done plumbing before?

While 'beginner' refers to the skills needed, plumbing can be unpredictable. Allow extra time, especially if you encounter old, stubborn fixtures or need to adapt to existing plumbing. Having the right tools and watching a few video tutorials beforehand will greatly increase your chances of success within the estimated timeframe.

My project lists a soldering torch, but I'm uncomfortable with soldering. Are there alternatives for connecting the new shower valve?

Absolutely! Many modern shower valves are designed for PEX or CPVC connections, which use crimp, push-to-connect (e.g., SharkBite), or solvent weld fittings. These methods are often more beginner-friendly than soldering copper pipes and eliminate the need for a torch, if your existing plumbing can be adapted.

What's the most common reason for leaks after installing new shower fixtures, and how can I prevent them?

Leaking typically occurs due to improperly tightened connections or damaged seals. Always apply plumber's tape (PTFE tape) or pipe dope on all threaded connections before tightening. Hand-tighten first, then use a wrench for another quarter to half turn, being careful not to overtighten and strip threads. Test thoroughly before closing up walls.

I can't find a specific shut-off valve for my shower. What should I do?

If your shower doesn't have dedicated shut-off valves, you'll need to turn off the main water supply to your entire home. Locate your main water shut-off valve, usually in your basement, utility closet, or near the water meter outside. Always confirm the water is off by checking other faucets before proceeding with any disassembly.

Transcript
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you can slide a chrome tube over the copper to dress it up a little bit more. No matter what valve I'm using, I always slowly turn the water on. That's another mistake that homeowners make. They turn the water on full blast and I check for leaks both at the toilet shutoff valve as well as the water supply line at the toilet fill valve. If you don't have any leaks then you're good to go and that's how you replace a toilet shutoff valve. I hope these tips help you out. Give the video a thumbs up if they did and I'll see you in the next tutorial.

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