How to Fix a Pinhole Leak in a PEX Pipe [Bonus Tips Included]

Wait, did you notice a tiny leak coming out of your PEX pipe? It’s not too long you installed the pipe and already is leaking! I know how irritating is to change pipes frequently. But you know, what? You can fix it!

So, how to fix a pinhole leak in a PEX pipe?

To fix a pinhole leak in a PEX pipe, first, you have to shut off the water supply. Clean the leaky area and put a patch around it. In the end, secure the patch with adhesives so that you don’t have the same problem in the future.

If you want to learn the process in detail, read the article till the end. But before you jump into the solution, let’s tell you how these pinhole leaks appear.

What Causes a Pinhole Leak in a PEX Pipe?

There are 4 major reasons that can cause a pinhole leak in a PEX pipe. They are high water pressure, age, low-quality fittings, and poor installations. Check out the segments below to learn more about these causes in detail.

Higher Water Pressure

Often, the internal water pressure, especially in pipes near the water main, becomes elevated. This increased pressure accelerates deterioration inside the pipe, leading to pinhole leaks. Regularly check your water pressure to prevent this menace.

Age-Related Deterioration

Copper pipes, commonly found in older homes, have a lifespan of about 25 to 30 years. Pinhole leaks signal that your pipes are nearing the end. Moreover, high mineral content in water can speed up this aging process, reducing the pipes’ service life.

Expert Tip: You can filter harmful mineral content from the hard water using a water filter. I’ve written a whole article on selecting the best water filter for PEX pipes. Give it a read if you’re suffering from hard water problems.

Leaks at Fittings

Any alterations or fittings in your pipes create turbulence, increasing pressure and causing rapid deterioration. Pinhole leaks often sprout near these fittings. Proper installation techniques, especially with fittings, are vital to prevent this issue.

Poor Installation

Errors during the initial installation can haunt you later. Inadequate cuts and joining of pipe segments lead to internal corrosion, eventually causing pinhole leaks. Ensure clean cuts and precise joining to avoid premature leakage disasters.

Remember, a stitch in time saves nine. You must regularly monitor your water pressure and invest in quality fittings. If you have older copper pipes, consider a professional inspection to prevent pinhole leaks from wreaking havoc in your home.

How to Fix a Pinhole Leak in a Pex Pipe: 6 Steps to Follow

Take a look at the following segments to learn how to fix a pinhole leak in a PEX pipe.

Required Tools and Materials:

PEX Repair Kit: Verify that it contains patches, adhesives, and connectors to ensure a comprehensive repair solution.
Clean Cloth: Essential for thoroughly drying and cleaning the affected area, promoting effective adhesion.
Sandpaper: Use to smooth the area around the leak, removing rough edges and debris for a secure patch.
PEX Pipe Cutter: Necessary for precise removal of the damaged section, ensuring accuracy in repairs.
Crimping Tools or Compression Fittings: Vital for securing patches or sleeves tightly, preventing future leaks.
Waterproof Adhesive: Select a high-quality adhesive from the repair kit, specifically designed for PEX pipes, ensuring a watertight seal.

Step 1: Turn off the Water Supply

Begin by locating your main water valve and shutting it off. This fundamental step is crucial to prevent potential flooding during the repair process.

Step 2: Identify the Location of the Leak

Thoroughly inspect the PEX pipe for any signs of water pooling or seepage. Pinhole leaks often manifest as small, inconspicuous puddles.

Step 3: Clean and Dry the Area around the Leak

Utilize a clean cloth to meticulously dry and clean the area surrounding the leak. Proper drying is essential to ensure optimal adhesion of the repair materials.

Step 4: Sand the Area Around the Leak and Clean it

Carefully smooth the area adjacent to the pinhole leak using sandpaper. Wipe away any residual debris with a clean cloth, guaranteeing a smooth surface for patch application.

Step 5: Apply the PEX Patch

From the repair kit, cut a patch to the appropriate size. Apply the waterproof adhesive to the patch’s back and firmly press it over the leak. Ensure the patch completely covers the affected area for a secure, watertight seal.

Step 6: Allow Some Time to Let the Adhesive Dry

Follow the recommended drying time specified by the adhesive manufacturer. Adequate drying time is essential to establish a robust bond. Once the adhesive is thoroughly dry, cautiously restore the water supply and meticulously inspect for any signs of leaks.

Additional Step: If Patching Doesn’t Work

Use a PEX Pipe Cutter to Remove the Damaged Section: Employ the pipe cutter for precise removal of the compromised portion, ensuring accuracy in repairs.

Slide a Patch or Sleeve Over the Cut Area: Securely fit the patch or sleeve over the cut area, providing comprehensive coverage for the damaged section.

Attach Connectors from the Repair Kit: Utilize crimping tools or compression fittings to firmly secure the connectors in place, creating a reliable and leak-free joint.

Carefully Restore the Water Supply: Turn on the water supply and meticulously inspect the repaired area for any signs of leaks. Thorough examination ensures the success of the repair process.

By adhering to these steps diligently and having the right tools and materials at your disposal, you can effectively and confidently fix pinhole leaks in your PEX pipes, ensuring the longevity and reliability of your plumbing system.

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FAQs

What’s the Best Sealant for Leaking Pipes?

Silicone sealant is the best sealant for leaking pipes. It can seal plastic, glass, and metal pipes strongly. Epoxy putty also acts as a strong adhesive for leaking pipes.

Are Pinhole Leaks Common in PEX Pipes?

No, pinhole leaks are not common in PEX pipes. It can be a result of foreign contamination in the wall or due to material deterioration with time.

Can a Pinhole Leak Burst?

Yes, pinhole leaks can burst. But it happens only if the internal pressure is high for a long time. When the pipe can’t withstand the pressure anymore, the pinhole leak bursts.

Conclusion

So, that’s how to fix a pinhole leak in PEX pipe. Hopefully, you’ve found you can fix the leaking issue after reading this article. Stay careful not to damage the pipe entirely. You can also apply the additional step discussed if patching doesn’t solve your problem. Until next time, good luck!