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Mount New Faucet — Install the New Faucet Components

Intermediate6 hours

Part of project

How to Replace a Deck-Mount Garden Tub Faucet · Step 6 of 8

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In this video

Install the new faucet. First, clean the countertop surface where the old faucet was. Place the top gasket onto the countertop, aligning it with the sink holes. Feed the new faucet and its attached water lines through the holes. From underneath, slide on the bottom gaskets and hand-tighten the plastic mounting nuts to secure the faucet. Then, connect the new hot and cold water supply lines to the corresponding shut-off valves, ensuring hot is on the left and cold is on the right. Tighten these connections with a wrench, but do not overtighten.

Goal: Install new faucet and connect water lines

  • The gaskets in the new supply lines create the seal, so you only need to tighten the nuts until they are snug, plus a quarter-turn. Overtightening can damage the gasket.

Used in this video

  • Adjustable Wrench (Tool Type: Adjustable Wrench) — Tightening the water supply line connections.
  • Paper Towel (Cloth Material: Paper) — Cleaning the countertop surface.
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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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bitter on my mobility or lack of mobility because I have none. Step three is to mount your new faucet. You just want to make sure that the big gasket is underneath your faucet on top of the countertop. This faucet came with the gasket on both sides. We're going to put those on. Huh, it goes on the left. It colds on the right. And then tighten the nut down to keep it secure against the countertop. Once your faucet is secured, you're going to connect your new water lines. Now we've got our cold and our hot supply lines taken off. We've got our faucet in place now, so all it's left is to run the new supply lines. Just remember, cold is on the right, hot is on the left. I found it's easiest to connect your water lines first to the underside of the sink faucet. And then I can connect them down to the water line. You're there tough thing about doing this is trying to reach your tools around the sink. Now you don't need to tighten these water lines crazy tight. Just tight enough to where it won't leak. The gasket in the line does all the work. Once your new water lines are connected to the faucet and the water supply,

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