How to Fix a Leaky Kitchen Sink Drain? – Solutions for Major and Minor Leaks 🚿

For a temporary fix, patching the leaks is the quickest solution. If the problem is with the P-trap, then replace it. And finally, if the pipe connection is the issue, you can tighten up the slip nuts or wrap the plumber’s tape around the threadings on metal pipes.

Well, this isn’t an easy task to do. Every fix I mentioned here includes several steps, and I can’t guarantee they will work. However, if you can perform them properly, then there are big chances that you’ll be able to fix the drain leak. 🔧💦

So read on and learn how to fix the kitchen sink drain leak.

Why Is My Kitchen Sink Drain Leaking? 🚰

Kitchen Sink Drain Leaking

There can be many reasons behind your kitchen sink drain leakage. You have to find out the reasons first to repair them. We will discuss some reasons that can cause leaking.

Leak Around the Faucet 💦

If the water is only leaking around the base of the faucet when you turn your sink on and stops when you turn it off, it can be a leak around the faucet. That means it may not be a problem under the cabinet.

All you have to do is change the gaskets or replace some washers. That will prevent the water from spilling on your counter and make it flow correctly.

Corrosion of the Valve Seat🛠️

Corrosion of the valve seat can be a reason for the drain leakage. The valve seat connects the faucet and the spout. Most of the leakage problems are caused by the corrosion of the valve seat. You have to call a professional plumber to fix it.

Next time you will not need to call a plumber for this problem if you always keep the valve seat clean.

Clogged P-Trap 🔄

This problem is so hard to discover because it is out of sight. If you can’t find any source of the leakage, but the water is continuously spilling, then this can be the problem.

You may not know about P-Trap. It is a bent drain pipe that’s shaped like the letter ‘p.’ You most probably have one under your kitchen sink. It makes a connection between the sewer system and your sink’s drain.

After a long period of time, the P-Trap pipe gets clogged because of debris and food scraps. When it happens, you have to either clean it or replace it with a new one.

The water Supply Connection is Loose🚿

If you are cleaning your dishes in the sink and suddenly notice water coming out below the cabinet, then it might be a loose connection in the water supply. The water supply connection is typically added underneath the sink in order to prevent leaking water in the cabinet.

If there is any loose connection in the system, you will see an instant water leak. You will need a plumber to fix this problem. Tightening up the loose components and sealing them will do the job.

Worn Out Washers 🔄

Worn-out washers are one of the most common reasons for leaky sinks. When you turn on the faucet each time a washer presses against the valve seat, that’s why after a long period, it will cause the washer to erode. When you notice water pooling around the spout, the washer reaches its limit, and you need to replace it.

Besides, you may read: Is It Safe to Pour Boiling Water Down Kitchen Sink? – When And When Not

How To Fix Kitchen Sink Drain Leak in 2024?

Kitchen Sink Drain Leak

You should take immediate action if you see a leak in your kitchen sink drain. Repairing and replacing it can cost a lot, but the longer you wait, the more the water will damage the surrounding areas. Waiting longer can cause an unexpected flood in your kitchen.

Don’t worry this segment is all about how to fix it. So let’s learn the ways.

01. Patch The Leaks Temporarily

Step 1: Apply a 2-part epoxy putty.

It is the most durable temporary fix. You can apply this in order to get some time to get ready for fixing.

Step 2: Wrap self-securing silicone tape around the pipe

If there’s only a minor leak, you can wrap self-securing silicone tape around the pipe. It will keep the water from leaking for a period.

Step 3: Secure a pipe clamp over a leak

If the leak is in the middle of the pipe then you can secure it with a pipe clamp. A pipe clamp has a flat rubber piece and a metal fastener. You have to put them around the leak. First, wrap the leak with the rubber and secure it with the metal fastener.

Or go with this video tutorial, credit goes to Mr. Nicholas larocci:

02. Fix Leaky Pipe Connections

Step 1: Tighten the slip nuts between the pipes

It can be a loose slip nut causing the leaks. You can fix it just by tightening it. If tightening doesn’t work then you have to replace it with a new one.

Step 2: Replace rubber gaskets at pipe connections

If the pipes are old and cracked, then the rubber gaskets can be cracked too. If tightening the slip nuts doesn’t work, then you should change the rubber gasket inside the slip nut.

Step 3: Wrap the plumber’s tape around threadings on metal pipes

If you have changed the rubber gaskets and the slip nut isn’t tightening, then you should use plumbers’ tape around the threadings on metal pipes. Also, try tightening the slip nut again. This time it should work.

03. Replace The P-Trap

Step 1: Put a bucket or pan underneath the pipes.

If you notice a leak in the pipes, the first thing you do is put a basket or pan underneath the pipes, which will keep the water from spoiling around.

Step 2: Unscrew the slip nuts starting from the drain

You will see a few slip nuts which connect the pipes to each other. You have to unscrew them in order to detach the pipes.

Step 3: Buy a P-trap that’s the same size as your old one

Measure the size of your old P-trap and buy a new one of the same size so it can fit perfectly.

Step 4: Screw the new vertical pipe onto the bottom of the drain

Hold the longest vertical pipe against the sink and screw it tightly.  You must put the rubber gasket and washer in before screwing the vertical pipe.

Step 5: Attach the trap arm and washer to the stub out in your wall

Now attach the shortest part of the pipe against the wall and push it hard. It will make a tight connection between the wall and the pipe. Then seal it with a washer and tighten the slip nut to secure it in place.

Step 6: Install the new P-trap

Now put the last part in place and tighten the slip nuts to secure the p-trap in place.

Step 7: Test the trap for any leaks

After you install the P-trap pipe, all you need to do is test it for any leaks. If you see any leak, then you should call a plumber.

How to Prevent Kitchen Sink Drain Leak

Now you know how to fix it, but we know prevention is always better. So to avoid the problem again, some prevention tips are given for you.

Check for clogs: Clogs in the drain can cause water to back up and leak out of the sink. Regularly checking for and removing any clogs can help prevent leaks.

  • Use a sink strainer: A sink strainer can help prevent debris from getting stuck in the drain and causing a clog.
  • Avoid pouring grease down the drain: Grease can harden and cause clogs in the drain. It’s best to dispose of grease in the trash instead of pouring it down the drain.
  • Avoid using harsh chemicals: Harsh chemicals can damage pipes and cause leaks. If you need to clean your drain, consider using a natural cleaner or a product specifically designed for use in drains.

Final Words

So it’s all about how to fix a kitchen sink drain leak? In this article, I’ve added solutions for both major and minor leaks. And also added some tips for preventing the problem.

However, my final tip is: If you are not an expert in plumbing work, then it’s better for you not to perform any major task. Call for a plumber, and you can get the job done just by costing a few bucks.

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Helen Knight
Helen Knight

I'm passionate about cooking and making simple, delicious recipes that you can always feel confident feeding to friends and family. My goals for you are to have fun in the kitchen, learn new things, and create beautiful dishes. I have a lot of experience using kitchen appliances, so making great food is my passion and my favorite thing to share with others. I prioritize food safety in all of my meals. Check out my blog SKI, for helpful tips and tricks to improve your own cooking skills. Let's explore the world of food together!

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