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Test for Leaks

Beginner5 hours

Part of project

How to Replace a Pop-up Bathtub Drain and Overflow Assembly · Step 8 of 8

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In this video

Place a dry pan and clean paper towels directly under the reassembled plumbing. Turn on the faucet and fill the sink basin completely. Pull the drain stopper to release all the water at once, putting maximum pressure on the new seals. Carefully inspect the paper towels and all pipe connections for any sign of moisture or dripping. If no leaks are found, the repair is complete.

Goal: Verify a watertight repair

  • It's a good practice to leave the dry paper towels in place overnight to catch any very slow drips that may not be immediately apparent.

Used in this video

  • Pan (Material: Metal)Catching any water that leaks during the test.
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This Old House

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FAQs

What's the most challenging part for a beginner, and how can I prepare for it?

The trickiest part for a beginner is often accessing the plumbing behind the tub, especially if space is tight or an access panel isn't readily available. Ensure you have ample lighting, like the NITECORE flashlight, and be prepared for potentially corroded or seized old components which might require extra patience and leverage from Channellock pliers.

How important is using plumber's putty, and are there alternatives for sealing the drain flange?

Plumber's putty is crucial for creating a watertight seal between the drain flange and the tub surface, effectively preventing leaks. Apply a generous, continuous bead under the flange before seating it. While silicone sealant can also be used, plumber's putty allows for easier future removal if necessary.

The project says 5 hours, but what if my old drain is severely corroded or stuck?

Heavily corroded or seized drain components can indeed extend the project time beyond the estimated 5 hours. Have penetrating oil on hand to help loosen stubborn threads and allow it to sit. You might also need a hacksaw, like the Husky Close Quarters Hacksaw, to cut away old components if they cannot be unscrewed.

Do I need to turn off my home's main water supply before starting this project?

While you are not directly working on pressurized water lines that require the main supply to be off, it's a wise safety precaution to do so. This minimizes the risk of accidental water damage if a pipe is inadvertently compromised or if you want to prevent water from inadvertently entering the tub during the process. It also helps manage any residual water in the pipes.

Transcript
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And that's going to keep it from leaking. There's toilet paper under there. It's clean, it won't hot. It'll show the trips. Now we already have the sink filled up again. And let's go ahead and drain it for the second time. So if we look under here, I wiped off the pipes just to make sure there's no like water left on them. And just keep them. And see if it's dripping anywhere. So far, I don't see anything. Now we have everything checked and it isn't leaking just by the first look. We're going to leave this toilet paper under here overnight. And as we use it, we'll tell if it's leaking at all. But it's much better than what it was before. We're getting good grip before we were only getting like a quarter inch of grab on that pipe, which is why it was leaking. Now we can go ahead and put the tools away and just kind of clean up a little bit.

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