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Install the New Spout — Install the New Tub Spout

Beginner2 hours

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Tub Spout & Diverter Installation: A DIY Guide · Step 5 of 6

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In this video

Take the new tub spout and carefully thread it onto the prepared pipe nipple by hand. Turn it clockwise, making sure not to cross-thread it. Hand-tighten it as much as possible. Then, use the strap wrench to give it a final turn until it is snug and flush against the wall, with the spout pointing downwards.

Goal: Attach New Faucet Spout

  • Do not overtighten the spout, as this can damage the threads or the pipe inside the wall. It only needs to be snug enough to prevent leaks and sit flush.

Used in this video

  • Strap Wrench (brand: Unknown, Tool Type: Pipe wrench) — Tightening the new tub spout without scratching the finish.
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FAQs

How do I determine if my existing tub spout is threaded or slip-on, and how does this affect removal and installation?

A threaded tub spout will unscrew counterclockwise, often revealing male threads on the pipe coming from the wall. A slip-on spout usually has a small set screw underneath that, when loosened, allows the spout to be pulled off. Knowing the type is crucial for choosing the correct replacement and preparing the appropriate tools for removal.

Why is it crucial to clean the copper pipe and apply plumber's tape, and what if I skip these steps?

Cleaning the copper pipe with a wire brush or emery cloth removes debris and corrosion, creating a smooth, optimal surface for a seal. Plumber's tape (2-3 wraps clockwise) lubricates the threads and fills microscopic gaps, ensuring a watertight connection. Skipping these steps significantly increases the likelihood of leaks, potentially leading to costly water damage behind your wall.

What specific tools will I absolutely need for this tub spout installation project?

You will primarily need an adjustable wrench for both removal and installation, along with a wire brush or emery cloth to clean the copper pipe. If your existing spout is soldered on, you'll also need a pipe cutter. Don't forget plumber's tape, which is essential for ensuring a watertight seal on threaded connections.

What should I do if I encounter a leak after installing the new tub spout and turning the water back on?

Immediately turn off the main water supply again. If threaded, carefully remove the spout, re-clean the pipe, apply fresh plumber's tape (2-3 turns clockwise), and re-tighten the spout, ensuring it's snug but not overtightened. For slip-on spouts, verify the set screw is tight and the spout is fully seated on the pipe, checking any internal O-rings.

Transcript
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You have the new tub spout. You're very gentle. We're okay with a couple times and make sure you're not cross-studying it because that would be counterproductive. Sometimes these old threads can be really stubborn. That's why I always get them as tight as I can get them with my hand. We've got the strap wrench. So we don't want to have to finish. You don't want to bottom these out too tight. That's about all we can get. I'll see the little gap there. That was there during the original installation. So if I can't go around this one more time, we might end up taking this out and seeing if we can get a little bit shorter. And if it's kind of an odd size because it's only about a 16th of an inch gap. So we'll put a good read a silicone around this if we can't get any tighter.

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