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Install New Faucet Body — Secure and Seal the Exterior Flange

Beginner4 hours

Part of project

How to Replace an Outdoor Faucet (Spigot/Hose Bibb) · Step 5 of 6

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In this video

Take the new faucet assembly and carefully feed the attached hoses and wires down through the mounting hole in the countertop. Ensure the faucet base is seated correctly on the countertop surface. From underneath the sink, slide the plastic mounting bracket up over the hoses and onto the faucet's threaded shank. Follow this with the large brass mounting nut, threading it onto the shank by hand. Use the included plastic tightening tool to fully tighten the nut, securing the faucet assembly. Check the faucet's alignment from above to ensure it is straight. Finally, use a Phillips head screwdriver to tighten the two screws on the mounting bracket, which will clamp it against the underside of the counter and prevent the faucet from rotating.

Goal: Secure the new faucet to the countertop

  • Have someone hold the faucet in the correct position from above while you tighten it from below to ensure proper alignment.

Used in this video

  • Included plastic tightening tool (Tool Type: Faucet Wrench, Power Source: Manual) · optionalTightening the mounting nut in the tight space under the sink.
  • Screwdriver (Tool Type: Screwdriver, Power Source: Manual, Handle Type: Phillips) · optionalTightening the two securing screws on the mounting bracket.
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This Old House

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FAQs

How difficult is replacing an outdoor faucet for a beginner, and how long should I expect it to take?

This project is rated as 'beginner' difficulty, making it suitable for those new to DIY plumbing. With proper preparation and the right tools, it typically takes about 4 hours. Most of the time involves careful disconnection, preparation, and leak testing.

What are the most critical safety precautions I need to take before starting this project?

The most crucial step is to shut off the main water supply to your house and drain the lines before beginning. This prevents accidental flooding. Always wear safety glasses and gloves to protect against debris, tools slipping, or contact with old pipes.

What specific tools and materials are essential for this faucet replacement, especially for a stubborn old unit?

Beyond basic tools, you'll definitely need two sturdy pipe wrenches (like the RIDGID 31305 and TradesPro 830914) to safely remove the old faucet without twisting internal pipes. Penetrating oil (Blaster PB) is critical for seized connections, and Teflon tape along with pipe thread sealant (Hercules Real-Tuff) are essential for leak-free installation.

Why is installing a 'frost-proof' faucet recommended, and are there different types or considerations for them?

Frost-proof faucets are highly recommended because they prevent water from freezing and bursting the pipe inside your wall during cold weather, saving you from costly repairs. They come in various lengths, so measure the thickness of your exterior wall to ensure you select one that extends far enough into your house for proper function and drainage.