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Match and replace cartridge — Remove the Old Cartridge

Beginner2 hours

Part of project

Shower Valve Cartridge Replacement: A Step-by-Step DIY Guide · Step 5 of 8

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Take the old cartridge with you to the hardware store, so that you can find an exact replacement.

Goal: Stop the leak

2.7M views8.1K30 minutes
This Old House

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FAQs

Is replacing a shower valve cartridge a genuinely beginner-friendly DIY, and how long should I expect it to take?

Yes, it is considered a beginner-friendly project, primarily involving basic removal and reinstallation steps. While the estimated time is 2 hours, allow for extra time, especially if you encounter stubborn or corroded parts.

What specific tools and materials are essential for this shower cartridge replacement project?

You will need screwdrivers (multi-bit is useful), pliers, and the new shower valve cartridge itself. Don't forget plumber's grease to lubricate the O-rings on the new cartridge for a proper seal and easier installation.

What if I encounter difficulty removing the old cartridge or its retaining clip/nut?

For older fixtures, parts can be corroded. Apply penetrating oil and let it soak, then use sturdy pliers to gently wiggle and pull the cartridge out. Ensure you are using the correct type and size of pliers for the retaining clip or nut to prevent stripping or damage.

What is the most critical safety step I need to take before starting this project?

The most crucial step is to completely shut off the water supply to your shower, or ideally, to your entire home, before you begin any disassembly. Failure to do so can result in significant water damage and flooding.

Transcript
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Now when repairing a bathroom faucet or shower faucet, things you need to keep in mind. If it's leaking behind the wall or if the valve body is shot, you may need to call in a professional to help you change the valve body behind the wall. Again I'm Terry with Towers Murray Plumbing. And we've just shown you how to repair a leaky shower faucet.

Auto-generated transcript. May contain errors.