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Shut Off Water Supply — Turn Off the Water Supply

Beginner

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Bathroom Faucet Installation & Replacement: A Step-by-Step DIY Guide · Step 1 of 3

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In this video

Go under the sink and locate the hot and cold water shutoff valves. Turn the handles clockwise to completely shut off the water supply to the faucet. Place a towel under the pipes to catch any drips.

Goal: Plumbing

  • Older shutoff valves may fail to close completely or may not reopen. The internal rubber washers can also disintegrate and cause clogs in the faucet.

Used in this video

  • Towel (brand: Unspecified, Material: Cotton)Catching any water that drips from the connections.
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FAQs

How difficult is it for a beginner to install or replace a bathroom faucet, and how long should I expect it to take?

This project is rated as beginner-friendly, but requires careful attention to detail. For someone new to DIY, expect it to take anywhere from 1 to 3 hours, including gathering your tools and cleaning up. Experienced DIYers might finish it in under an hour, but it's best to allow ample time to avoid rushing and potential mistakes.

What should I do if the shut-off valves under my sink are seized, leaking, or I can't locate them?

If your shut-off valves are problematic or missing, you'll need to turn off the main water supply to your entire house before proceeding. This is a critical safety step to prevent flooding. If the valves are seized or actively leaking, it's a good opportunity to replace them or call a plumber before installing the new faucet.

Beyond the adjustable and basin wrenches, what other essential tools or materials should I have on hand?

While the adjustable and basin wrenches are crucial, also have a bucket or small container, old towels or rags, and a flashlight handy. A utility knife or scraper can help remove old caulk or putty, and a small wire brush might be useful for cleaning the sink surface. Don't forget plumber's putty, as specified.

What are the most common reasons for leaks after installing a new faucet, and how can I prevent them?

Most leaks stem from improperly tightened supply line connections or an insufficient seal at the faucet base. Ensure all supply lines are hand-tightened first, then given an additional quarter to half turn with your wrench. Apply a consistent, generous bead of plumber's putty around the base of the new faucet to create a watertight seal and prevent water from seeping under the fixture.

Transcript
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Make sure that your supply line stops, this goes up to the hot, this goes up to the cold. Make sure these are shut off all the way. And you may find if they're old, they may not shut off. Or if you shut them off, they may not open up again. So be aware of that before you start.

Auto-generated transcript. May contain errors.