Replace Leaky Bathroom Sink Drain Pipe

By | December 12, 2019

Replace Leaky Bathroom Sink Drain Pipe: A Step-by-Step Guide

A leaky bathroom sink drain pipe can be a frustrating problem that can lead to water damage and mold growth. If you're facing this issue, don't worry - it's a relatively easy fix that you can do yourself with a few simple tools and materials. Here's a step-by-step guide to help you replace the leaky drain pipe in your bathroom sink:

Step 1: Gather Your Tools and Materials

Before you start, make sure you have all the necessary tools and materials. You'll need:

  • A new drain pipe (make sure it's the correct size for your sink)
  • A bucket
  • A wrench
  • A screwdriver
  • A putty knife
  • Plumber's putty
  • A towel

Step 2: Turn Off the Water Supply

Once you have all your tools and materials, turn off the water supply to the sink. You can usually do this by turning the valve under the sink or by turning off the main water supply to your home.

Step 3: Remove the Old Drain Pipe

Once the water is turned off, you can remove the old drain pipe. Start by unscrewing the nuts that hold the pipe in place. If the nuts are rusted or corroded, you may need to use a wrench to loosen them.

Once the nuts are loose, you can remove the old pipe. Be careful not to drop it into the drain hole. If the pipe is stuck, you may need to use a putty knife to loosen it.

Step 4: Clean the Drain Hole

Once the old pipe is removed, clean the drain hole. Use a putty knife to scrape away any old putty or sealant. You can also use a wire brush to clean the inside of the drain hole.

Step 5: Apply Plumber's Putty

Once the drain hole is clean, apply a bead of plumber's putty around the base of the new drain pipe. This will help to seal the pipe and prevent leaks.

Step 6: Install the New Drain Pipe

Insert the new drain pipe into the drain hole. Make sure that the putty is evenly distributed around the base of the pipe. Hand-tighten the nuts until they are snug.

Step 7: Turn on the Water Supply

Once the new drain pipe is installed, turn on the water supply. Check for leaks. If you see any leaks, tighten the nuts until the leak stops.

Step 8: Clean Up

Once the leak is fixed, clean up any mess. Wipe up any excess putty or water. You can also use a towel to dry the area around the sink.

And that's it! You've now successfully replaced the leaky drain pipe in your bathroom sink. If you follow these steps carefully, you can save yourself the cost of calling a plumber.


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