Pinhole water leaks are common plumbing issues that can cause significant damage if left unattended. While it’s essential to address them promptly, many homeowners are unsure how to fix them. In this blog, we’ll provide you with a step-by-step DIY guide to fix a pinhole water leak, helping you save time and money on potential repairs.

1. Gather the Necessary Tools

Before you start fixing the pinhole water leak, make sure you have the right tools on hand. You’ll need a pipe cutter, emery cloth or sandpaper, flux, solder, and a propane torch. These tools are readily available at most hardware stores and will be instrumental in resolving the issue.

2. Turn off the Water Supply

The first and most crucial step in fixing a pinhole water leak is to turn off the water supply to the affected area. Locate the nearest water shut-off valve and turn it clockwise until the water flow stops completely. This step is essential for ensuring your safety and preventing any further water damage.

3. Prepare the Pipe

Once the water supply is off, use the pipe cutter to remove the section of the pipe that contains the pinhole leak. Make sure to cut a few inches away from the hole to ensure you remove any weakened or corroded parts of the pipe. After cutting, use the emery cloth or sandpaper to clean the ends of the remaining pipe.

4. Apply Flux and Solder

Apply a thin layer of flux to the cleaned ends of the pipe. Flux helps create a strong bond between the pipe and the solder. Next, heat the pipe using the propane torch until it reaches the appropriate temperature. Once the pipe is hot enough, touch the end of the solder to the joint. The solder will melt and flow into the joint, sealing the pinhole leak.

5. Inspect and Test

After the solder has cooled and solidified, inspect the repaired area for any visible signs of leaks. Once you’re confident that the pinhole leak is fixed, you can turn the water supply back on and test for any further leaks. If everything looks good, you’ve successfully resolved the pinhole water leak!


Fixing a pinhole water leak doesn’t have to be a daunting task. With the right tools and a bit of know-how, you can address the issue quickly and effectively. Remember to turn off the water supply, prepare the pipe by cutting and cleaning, apply flux and solder, and test for any additional leaks. By following this DIY guide, you can save yourself the hassle and expense of hiring a plumber and ensure your plumbing system remains in good working order.