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Shut Off Water Supply — Turn Off the Shower's Water Supply

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Shower Knob Repair & Replacement: A Step-by-Step DIY Guide · Step 1 of 4

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Before beginning, locate the two water shutoff valves, known as angle stops, under the sink. Turn the handles clockwise until they stop to shut off the water supply. To confirm the water is off and to relieve any pressure, turn on the faucet handles. No water should come out.

Goal: Stop water flow to the faucet.

  • Never assume the shutoff valves are working correctly. Always test by turning on the faucet after closing the valves.
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This Old House

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FAQs

Why is it so important to turn off the water supply before starting, and what if I can't find the shut-off valve?

Turning off the water supply is crucial to prevent flooding and serious water damage during the repair. If you can't find local shut-off valves near your shower, you'll need to turn off the main water supply to your entire home, usually found near your water meter or hot water heater.

What should I do if the screws on my old shower knob are stripped or stuck, making them difficult to remove?

If screws are stripped, try placing a wide rubber band flat over the screw head to provide extra grip for your screwdriver. For stuck screws, a little penetrating oil applied and left to sit for a few minutes can help loosen them. In more stubborn cases, a screw extractor kit may be necessary.

How long does this shower knob repair project typically take for a beginner, and what's the average cost?

For a beginner, this project usually takes about 30-60 minutes, assuming you have all the necessary tools and the new knob on hand. The cost largely depends on the new shower knob, which can range from $15 for a basic model to $50+ for more decorative or brand-specific replacements.

Do I need the exact 'Milwaukee 8 in. x 3/8 in. Slotted Flat Head Screwdriver' mentioned, or will any flathead work?

You do not need that exact brand or model of screwdriver. Any standard flathead screwdriver with a tip width of approximately 3/8 inch and a Phillips head screwdriver of appropriate size for your knob's screws will work. The Milwaukee tool is simply an example of a suitable option.

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before starting this process you want to ensure that both of your angle stops are in the off position never assume because you turn the angle stops to the off position that you've cut the water completely you always want to test it by turning on your faucet or at the water is off as I'm going to

Auto-generated transcript. May contain errors.