How to Replace a Leaking Pipe In You Wall

working on a leaking pipe
  • 3-8 hours
  • Intermediate
  • 50-200
What You'll Need
Drywall saw
Teflon tape
What You'll Need
Drywall saw
Teflon tape

A leaking pipe in the wall can cause a lot of problems and should be repaired immediately. No one wants to develop mold and mildew in their home, but a leaking pipe can do just that.

Replacing the pipe is not an easy task, but it is doable with the proper knowledge and tools. Here are the basics of how to replace a leaking pipe in the wall.

Step 1 - Shut off the Water

Turn off the water to the pipe you are replacing. The last thing you need to do is flood the room you're working in. Therefore, go to the valve that shuts down that area of the house and turn it off.

Step 2 - Empty the Pipes

leaking pipe behind a wall

Once you have the water turned off, turn on a faucet attached to the water pipe. This will empty the pipe so no water will be in it when you take it out. If you skip this step, you will most likely have a mess on your hands.

Step 3 - Cut into the Wall

In order to replace the pipe, you are going to have to gain access to it first. This is done by cutting into the wall in the area in which it's leaking.

There are a number of different ways you can access the inside of the wall. You could just break into it with a hammer if you want.

However, one of the easiest and most efficient methods is to use a drywall saw to cut into it. With this method, you can control the size of the opening and cut it in the shape of a square. This will make repairing the hole easier after you're done with the job.

Step 4 - Remove the Pipe

Once you have made your way into the wall, remove the pipe. Use the wrenches to get it unscrewed from the surrounding pipes. You will have to put one wrench on the body of the pipe and another wrench on the joint. You will most likely have to apply a lot of pressure to the pipe in order to unscrew it.

Step 5 - Find Replacement

piping in a wall

Once you have the pipe out of the wall, you can determine exactly what it is. Determine the size of the pipe and then get another one exactly like it.

If you need to, take the piece with you to the plumbing store to make sure you get the right size replacement.

Step 6 - Install the New Pipe

Once you have the new pipe, place it in the spot where the old one was located. Be sure to put Teflon tape around the threads of the pipe to make sure it seals up properly. Then screw in the pipe tightly.

Step 7 - Turn the Water on

After the pipe is replaced, turn the water back on to see if it still leaks. If everything looks good, you should be finished and ready to repair the wall.