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Turn on Water and Check for Leaks — Test for Leaks and Finalize

Intermediate6 hours

Part of project

How to Replace a Deck-Mount Garden Tub Faucet · Step 8 of 8

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In this video

Slowly turn the water back on at the shut-off valve by rotating the handle a quarter turn until it stops. You will hear the toilet tank begin to fill. As it fills, carefully inspect both connection points for any signs of water drips. Use a towel to thoroughly dry the fittings, valve, and the floor area around them. For a more reliable leak check, place a dry piece of toilet paper on the floor directly under the connections. Any small drip will quickly become visible on the paper. It is a good practice to check again after 20-30 minutes to ensure there are no slow, persistent leaks.

Goal: Verify the new installation is leak-free

  • Toilet paper is very absorbent and will show even the smallest drop of water, making it an excellent tool for detecting slow leaks.

Used in this video

  • Towel (Material: Fabric, Availability: Commonly found in households)Drying the work area for an accurate leak check.
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FAQs

How challenging is replacing a deck-mount garden tub faucet for someone with limited plumbing experience, and why does it take up to 6 hours?

This project is rated intermediate primarily due to the often tight and awkward access under the tub deck, and the potential for seized or corroded plumbing components. The 6-hour estimate accounts for troubleshooting, the slow process of working in confined spaces, and thorough leak testing to ensure a secure installation.

Why are multiple types of wrenches listed, especially two basin wrenches, and are they all essential for this project?

Multiple wrenches, including two basin wrenches (telescoping and standard), are highly recommended. This ensures you have the correct tool to reach and properly grip various nut sizes and angles, especially the difficult-to-access mounting nuts under the tub deck. Having both types of basin wrenches can be crucial for different space constraints.

What are the most critical steps to prevent leaks and potential water damage during and after this faucet replacement?

The most critical steps include completely shutting off the main water supply before starting and confirming no water is flowing. When installing, use Teflon tape on all threaded pipe connections (not on compression fittings unless specified) and tighten all nuts firmly but without overtightening. After installation, test for leaks thoroughly over several hours, checking all connections for drips.

What should I do if the old faucet nuts or supply lines are seized and won't loosen, or if I encounter heavy corrosion?

If parts are seized, apply penetrating oil like KROIL generously and let it sit for at least 15-30 minutes to work. Use firm, steady pressure with your basin wrench or adjustable wrench. If components are severely corroded or refuse to budge, you may need to carefully cut them away using a hacksaw, taking extreme caution to avoid damaging the tub or surrounding plumbing.

Transcript
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those joints turn on our quarter turn valve let it fill up make sure there's no leaks dry it off get this thing out of the way what i usually do is make sure this is perfectly dry under here and come back i'll watch it here for a minute just to make sure that then we'll come back 20 minutes and make sure there's no slow grips another trick that i like to use is take some toilet paper lay it under there because that'll show the leaks real easily if there are any drips at all right let's uh

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