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Prepare the Work Area — Preparation and Safety

Intermediate

Part of project

How to Install a Two-Handle Shower Valve · Step 1 of 7

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In this video

Before starting, prepare the area under the sink. Place a drop cloth on the floor in front of the cabinet to protect it from spills. Then, place a shallow pan or bucket directly underneath the P-trap to catch any water that will spill out when it's removed. Finally, put on a pair of vinyl or rubber gloves.

Goal: Prepare work area

  • Using a low-profile pan can make it easier to fit under the plumbing.

Used in this video

  • Bucket (Bucket Capacity: Small)Catching water and debris from the P-trap.
  • Drop cloth · optionalProtecting the floor and cabinet from water spills.
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This Old House

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FAQs

What are the most critical skills and tools required for this project, especially for a beginner?

The most critical skill is copper pipe soldering, as the new valve needs to be securely joined. Essential tools include a pipe cutter (like the AUTOCUT 1/2 in. Copper Pipe Tubing Cutter), a soldering torch kit, flux, solder, and safety glasses (HDX Indoor Safety Glasses). Practice soldering on scrap pipe if you're new to it.

How can I ensure I don't cause water damage or other issues during installation?

Always shut off the main water supply to your house before starting any plumbing work. After soldering, pressurize the system and carefully inspect all new connections for leaks before closing up the wall. Use Kleenex Paper Towels to dab around joints and confirm they are completely dry.

What's a realistic timeframe and difficulty level I should expect for this shower valve replacement?

This project is rated intermediate due to the necessary soldering and gaining access to the plumbing within the wall. For an experienced DIYer, it might take 4-6 hours, but beginners should budget a full day (8+ hours) to account for learning, careful work, and potential troubleshooting.

Are there alternatives to soldering the new shower valve if I'm not comfortable with a torch?

Yes, you can use push-to-connect (e.g., SharkBite) or PEX crimp fittings as alternatives to soldering. These methods require different tools like a PEX crimper or just the specific fittings themselves. While often quicker, they can be more expensive than traditional copper soldering and may result in a bulkier installation.

Transcript
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Let's take a look. This is your P-trap or P-stop. It holds water right here. We don't have to turn the water off because we're dealing with the drain, but there will always be residual waters in the drain. So I get a little low pan that I fit underneath there. I also put down a drop cloth in case there's any overflow and there's water left in the sink and it overflows. This will protect your floor. It's pretty easy to take one of these off, but if you find that this is on too tightly, you can use channel lock pliers or wrench. Before I start any job under the sink, I like to put on some vinyl gloves. It cuts down on the gross factor. There we go.

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