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Loosen the Spout Mounting Nut — Remove the Old Bathtub Faucet

Beginner3 hours

Part of project

How to Install a New Bathtub Faucet: A Step-by-Step DIY Guide · Step 3 of 4

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In this video

Go underneath the sink to access the faucet's mounting hardware. Identify the large nut that secures the base of the spout to the countertop. Position the jaws of the basin wrench around this nut. Turn the wrench handle counter-clockwise to loosen the nut. You only need to loosen it enough for the spout to be moved from above; do not remove it completely.

Goal: Loosen Mounting Nut

  • Remember that when you are under the sink looking up, turning the basin wrench to your left will loosen the nut (lefty-loosey).

Used in this video

  • Basin Wrench (brand: Ridgid, Tool Type: Basin Wrench, Size: Standard)Loosening and tightening the faucet spout's mounting nut in the tight space under the sink.
  • Flashlight (brand: Ridgid, Flashlight_Type: Handheld) · optionalIlluminating the work area under the sink. The Ridgid basin wrench shown has one built-in.
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FAQs

How realistic is the 3-hour estimate for a beginner, and what common issues might extend the installation time?

While 3 hours is a good estimate for an experienced DIYer, beginners should budget more time, perhaps 4-6 hours. Unexpected challenges like rusted connections, stripped screws, limited access, or needing to retrieve forgotten tools can significantly extend the process. Patience is key, as rushing can lead to mistakes.

What are the absolute essential safety precautions I must take before starting to install a new bathtub faucet?

Always turn off the main water supply to your home and fully drain the lines by opening a lower-level faucet before beginning to prevent flooding. Ensure the work area is dry and well-lit to avoid slips. Be mindful of any nearby electrical outlets, though direct electrical work is not part of this project.

What are the most common mistakes that lead to leaks after installing a new bathtub faucet, and how can I prevent them?

Leaks often occur from improperly tightened connections (either too loose or overtightened, stripping threads). Ensure all supply line connections are hand-tightened, then given a final quarter to half-turn with a wrench. Always use plumber's tape on threaded connections and plumber's putty where recommended by the faucet manufacturer for seals around the base.

Are there any additional tools or materials, beyond those listed, that would be helpful for a smoother bathtub faucet installation?

Yes, having a bucket or old towels for draining water and potential drips is essential. A flashlight for working in tight, dark spaces is highly recommended. Depending on your current setup, a basin wrench might be invaluable for reaching nuts in confined areas, and plumber's tape is usually needed for threaded connections.

Transcript
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Loosing things up So now we need to loosen this nut right here. You can see it's very uneven in this hole We're just gonna slide this whole thing over a little bit once we get it loosened How do I know whether I'm tightening or loosening with my base and wrench when I'm underneath the sink, right?

Auto-generated transcript. May contain errors.