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Initial Inspection and Preparation — Prepare Your Work Area

Beginner2 hours

Part of project

Fix a Leaky Faucet: Repairing Water Intake Leaks · Step 2 of 5

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In this video

Begin by confirming that the water leak is coming from the garbage disposal unit itself, as opposed to other plumbing connections under the sink. Before you start inspecting closely, place a bucket or a dish directly under the disposal to catch any dripping water. This will help prevent water damage to your cabinet and give you an idea of the severity of the leak.

Goal: Confirm leak source and contain water

  • Finding the exact source of a leak under a sink can be tricky, so take your time to pinpoint the origin.

Used in this video

  • Bucket (Tool Type: Bucket, Power Source: N/A, Material: Plastic, Size: Medium) — Catching dripping water to prevent damage and assess the leak.
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This Old House

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FAQs

How difficult is this water intake leak repair for a DIY beginner, and can it realistically be done in 2 hours?

This project is indeed suitable for beginners, focusing on straightforward disconnection and reconnection of supply lines. The 2-hour estimate is realistic, assuming you have the necessary tools readily available and don't encounter heavily seized or corroded connections. Taking your time to ensure proper sealing is key.

What should I do if the shut-off valves under my sink don't work or are stuck, preventing me from turning off the water?

If the local shut-off valves are faulty or seized, you'll need to turn off the main water supply to your entire home. Locate your home's main water shut-off valve, usually in the basement, garage, or utility closet, and turn it clockwise until the water flow stops completely. Remember to notify anyone in your household before doing this.

Is Teflon tape absolutely necessary when reconnecting the water supply lines to the faucet tailpieces, and how should it be applied?

Yes, Teflon tape (also known as PTFE tape or plumber's tape) is highly recommended for these threaded connections. It acts as a lubricant to help threads seal better and prevents leaks. Wrap the tape clockwise around the threads of the faucet tailpiece 2-3 times, ensuring it's snug and doesn't cover the opening.

I reconnected the supply lines, but the faucet is still leaking where they attach. What's the most common reason for this, and how can I fix it?

The most common reasons for a persistent leak are improperly applied Teflon tape or loose connections. First, ensure the Teflon tape was wrapped clockwise and isn't bunched up. Then, gently tighten the supply line nuts a bit more with your adjustable wrench, being careful not to overtighten and strip the threads.

Transcript
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okay it's always bad to find leaks under your sink you never know where it's coming from if it's the sink itself all the connections the pipe you don't know how bad it is if it goes you know down below but you get down there and you check if you find out that it's your garbage disposal don't freak out um I'm lucky enough to have my best friend's brother owns properties and he does a lot of his own maintenance he came over and you know looked at it and showed me everything on the you know disposal where it could be the leaks could be and there was basically with mine there was only you know three main spots and mine luckily was the the easiest one but the first spot I can

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