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Test shower — Test the New Shower Knob and Check for Leaks

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

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Turn the water supply back on and test the shower to make sure it's working properly and the leak is fixed.

Goal: Verify repair

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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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otherwise replace it step 10. turn on the water supply and then test the effectiveness of the shower cartridge

Auto-generated transcript. May contain errors.