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Reconnect Faucet and Drain — Install the New Tub Faucet

Beginner

Part of project

Bathroom Tub Faucet Replacement: A Step-by-Step DIY Guide · Step 4 of 4

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In this video

Attach the faucet's mounting block to the new tub. Slide the faucet onto the block and tighten the screw. For the drain, use the new slip nut and gasket that came with the tub. Place the slip nut on the tailpiece, followed by the gasket with the beveled edge facing down towards the fitting. Thread this assembly onto the bottom of the sink. Then, connect the P-trap, ensuring all slip nuts are hand-tightened.

Goal: Connect plumbing to the new sink

  • Ensure the drain gasket's beveled edge faces the fitting it's sealing against to prevent leaks.
  • Do not use tools to tighten plastic nuts; hand-tight is sufficient and prevents cracking.

Used in this video

  • Screwdriver (brand: Generic, Tool Type: Hand tools, Power Source: Manual)Tightening the faucet mounting screw.
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FAQs

What should I do if I can't locate the shut-off valves for my bathtub, or if they don't work?

If individual tub shut-off valves are missing or malfunctioning, you'll need to turn off the main water supply to your entire house. The main valve is usually located where the water line enters your home, often in a basement, utility closet, or near the water heater. After turning off the main supply, open a lower-level faucet to drain water from the pipes before proceeding with the tub faucet replacement.

Beyond the adjustable wrench and screwdriver, are there any other tools that might make this tub faucet replacement project easier?

While the basic tools will suffice, a deep socket set (specifically for valve stems) or a basin wrench can be incredibly helpful for accessing and loosening nuts in tight spaces. You might also want a utility knife or scraper for removing old caulk or plumber's putty, and a flashlight for better visibility under the tub.

As a beginner, how much time should I allocate for replacing my tub faucet, and what's the typical cost for a new one?

For a beginner, this project typically takes between 1 to 3 hours, depending on how easily the old components come apart. The cost of a new tub faucet can vary widely, from around $50 for a basic model to several hundred dollars for high-end designer fixtures, so choose one that fits your budget and style.

What are the most common mistakes people make when replacing a tub faucet, and how can I avoid leaks after installation?

Common mistakes include not completely turning off the water, overtightening connections, or failing to use enough plumber's putty or thread sealant where required. To prevent leaks, ensure all connections are snug but not overtightened, apply plumber's putty consistently under the new faucet base, and always test for leaks thoroughly before closing up any access panels.