How To Repair A Leaking Copper Pipe

Leaking copper Pipe

A leaking copper pipe is a common plumbing problem in many homes. Even a small leak can lead to water damage, mold, and higher water bills if it’s not repaired quickly. Each problem can get you thinking how to repair a leaking pipe, but are they always recommended to do it yourself? Copper pipes are durable, but they can still develop leaks over time because of:

Corrosion
High water pressure
Damaged joints

In this guide, you’ll learn how to repair a leaking copper pipe, what tools you need, and when it’s best to call a professional plumber.

What causes a copper pipe leak?

A lot of domestic houses have pipe systems made of copper, especially old houses, as copper was considered as one of the most used materials for plumbing in the 90s. As time passes by, copper pipes might get weaker and get damaged from different factors such as objects falling inside, erosion or frost. Considering you might have the same system integrated in your house and you might have attempted to repair a copper pipe leak, below are some of the most usual cases that causes copper pipe leaks:

Corrosion Inside the Pipe
High Water Pressure
Poor Installation or Bad Soldering
Pipe Aging and Wear
Temperature Changes and Frozen Pipes
Physical Damage to the Pipe
Water Chemistry Problems
Abrasion From Pipe Vibration
Loose or Weak Pipe Joints
Clogged Pipes Causing Pressure Buildup

If you notice a copper pipe leak in your pipe system, the chances are that one of the problems above is the cause of it.

Fix A Leak In Copper Pipe

If you want to know the process behind fixing a copper pipe leak, in the next section you will find the tools needed to repair leaky pipes and the steps on how to fix a leak in copper pipe so that you have no more copper pipes leaking problems.

Tools You'll Need To Fix Leaks In Copper Pipes

Step-by-Step:

How to Repair a Leaking Copper Pipe

If you want to get rid of the leak follow these step-by-step instructions to safely fix a leaking copper water pipe and restore your plumbing system.

1.Turn Off the Water Supply

Before starting any copper pipe repair, shut off the water supply to prevent leaking. Make sure to drain any remaining water from the plumbing lines and reduce pressure inside the pipe.

2. Locate the Source of the Leak

Carefully check in the copper pipe to find the exact location of the leak. Some of the most usual problems include pinhole leaks, cracked pipe sections, or leaking solder joints. Dry the pipe completely so the damaged area is easier to identify.

3. Drain and Dry the Pipe

Any water left inside the copper pipe can interrupt soldering and repair materials. Use towels, a bucket, or a wet vacuum to remove excess water and keep the work area dry.

4. Clean the Damaged Area

Use emery cloth or sandpaper to clean the leaking section of the copper pipe. Removing corrosion, debris or anything else inside helps create a strong seal during the copper pipe repair process.

5. Choose the Best Repair Method

The right repair method depends on the severity of the leak. You may need a professional plumber to identify the problem so you don’t randomly guess and do any work that may cost you more in the future. Some common copper pipe repair options include pipe repair clamps for temporary fixes or epoxy putty for small pinhole leaks.

6. Repair the Leaking Copper Pipe

If using a repair clamp or epoxy putty, apply the product directly over the leak according to the manufacturer’s instructions. If the pipe is severely damaged, cut out the leaking section and install a replacement copper pipe or coupling, but for this case it is recommended to call a professional plumber to take care of it.

7. Allow the Repair to Set

Let the repaired area cool completely before restoring water pressure. Epoxy repairs and soldered joints both require time to be fully functional.

8. Turn the Water Back On

Slowly reopen the water supply and inspect the repaired area carefully. Check for drips, or pressure issues around the repaired copper pipe.

9. Test the Plumbing System

Turn water and let it run water and monitor the pipe for several minutes. If the leak continues or additional damage is visible, a professional plumber may be needed to complete the copper pipe repair.

10. Prevent Future Copper Pipe Leaks

After completing the repair, inspect the surrounding plumbing system for signs of corrosion or wear. Regular maintenance, water pressure monitoring, and pipe insulation can help prevent future copper pipe leaks.

DIY or Call a Professional?

While some minor copper pipe leaks may seem easy to fix, if you don’t do it properly you can damage the system, and can get hidden water leaks that are going to cost more money on repairs in the future. A lot of homeowners try to do it themselves, only to call a plumber later because the leak is only fixed temporarily and get back again, maybe even worse this time.

Copper pipe repair often requires more specialised tools that we may have in our home, an experience and good knowledge of how the copper pipes systems work, so even a small mistake during the repair process can weaken the pipe and create damage in its fittings that is going to lead in other future leaks that you will eventually call a plumber.

It’s best to contact a licensed plumber if:

1. The copper pipe is heavily corroded

2. The leak is behind a wall or ceiling

3. Multiple leaks are present

4. Water pressure has dropped significantly

5. The pipe needs soldering or replacement

6. Temporary repairs are no longer working

Don’t Let a Small Copper Pipe Leak Turn Into a Costly Repair

Copper pipe leaks cannot be ignored for too long, but if you do it, you are going to pay more for it later, as it will quickly turn into a plumbing emergency and an expensive water damage inside your home.

Instead of trying to do it yourself and open bigger problems for you tomorrow, call a plumber today and finish the job within the same day.