How to Stop Leaky Pipes Under Your Kitchen Sink


Discovering a leaking pipe under your kitchen sink can be a distressing experience. Not only does it disrupt your daily activities, but it can also lead to more severe problems if not addressed promptly. This article aims to guide you through the steps to diagnose and fix a leaking pipe under your kitchen sink effectively.


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Isaac NaisaliIsaac Naisali
05:04 10 May 24
Chris jnr and terry amazing workThank you boys
Kristeen ChattreeKristeen Chattree
22:28 09 May 24
James KellyJames Kelly
04:44 07 May 24
Prompt service at a reasonable price.I’ll be using them again
HebaHeba
02:59 05 May 24
The worst plumbing service ever .. I built my new home, and for some reason my shower drain kept getting blocked and filled up water (was not draining) in my bathroom, they sent their first person who checked and then escalated the problem to the managers who came out and ran a camera through my pipe advising i have a blockage in my pipe in the roof. So i trusted it was that. Bearing in mind this diagnosis all cost me a huge amount of money. So their worker David, went and bought an attachment to rejoin where he was going to cut the pipe. He cut my brand new ceiling to access the pipe (bathroom was upstairs) and he cut the pipe and when took it out he saw and advised there was no blockage and that his managers were wrong about their diagnosis. So they did all that and damaged my ceiling (which I had to get a plaster man to fix and pay for that!!) for nothing. Then the next day Christopher (who was the only smart and fair person in their whole company) came from Dr Leak plumbing and simply checked inside my drain and found it was blocked there with a bit of sand cement. It was a simple fix where he vacuumed and sucked it the sand cement from the drain. SO DR LEAK PLUMBING MADE ME PAY $1500 FOR THEIR STUFF UPS AND THEY DID NOT HOLD ACCOUNTABILITY TO FIX MY DAMAGED CEILING THAT THEY WRONGLY CUT. In the end i paid a hefty amount for a simple problem that Christopher fixed in 5 minutes. Worst company.
Angela ParkinsonAngela Parkinson
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Easy to book in, clear communication with arrival times, pricing and advice on what's best for your budget. Highly recommend!
michael Grantmichael Grant
04:24 29 Apr 24
This is the 5th time I have used Dr Leak plumbing services. Each time is as good as the last. The receptionist takes all your detail and States the plumber will text /call you as he gets near.The plumber is always polite and explains what is wrong and gives you several options on how to fix it.Highly recommended
Jonathan ZhuJonathan Zhu
01:00 29 Apr 24
Expect to pay a premium, and receive none of the benefits of a premium service. The initial plumber sent over failed to find the source of the leak blaming the leak on a missing puddle flange when it was in fact due to a hole on the sewer.In addition to other things they quoted for, they quoted for the grout to be replaced by epoxy grout. Which I accepted. Instead they sent other someone else with no experience using epoxy grout and was not comfortable in removing the grout from the wall. Although they lowered the quote it was still abhorrently expensive.I not recommend them at all. They also offer their customers to enter into a draw to win a 65inch Samsung TV if they offer a 5 star review so I would not trust any 5 star review below.
Cristian SalazarCristian Salazar
23:47 28 Apr 24
Chris and his team are always so reliable, fast and efficient, great service and workmanship time and time again!
Annie kuruAnnie kuru
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Exceptional job
Sean DodsworthSean Dodsworth
05:42 23 Apr 24
Alex BarthelAlex Barthel
04:54 18 Apr 24
50/50 ... bad start: day 1: outrageously high quote by plumber 1 to replace 50L electric hot water system. Company agreed to lower the price. day 2: plumbers came, installed the new system but connected hot/cold valve wrong way around, so NO hot water. day 3: Marco, plumber 3 came (1 hour late) and fixed issue within 5 minutes. A lot of waiting for plumbers ... Not sure I'd recommend them in the end ...
Elena DengelElena Dengel
03:27 18 Apr 24
Anje KaiAnje Kai
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Konstantin BosnicKonstantin Bosnic
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Alice Chan (Arisu)Alice Chan (Arisu)
00:28 15 Apr 24
Very happy, great service, efficient. Vince really nice
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Importance of Timely 
Intervention in Addressing 
Leaky Sinks 

By Chris Provenzale | August 2023

  • Founder / Director of Dr Leak Plumbing
  • License No. 368473C
  • Certificate IV in Plumbing & Services
  • Certificate III in Roof Plumbing
  • Kitchen, Bathroom & Laundry Renovation (KBLR) Licenced

 

Ignoring a leaking pipe can lead to a host of problems, including water damage to your cabinets and floors, increased water bills, and potential health risks due to mould growth. Therefore, it's crucial to address the issue as soon as you notice it to prevent further complications.

 

Identifying the
 Source of the Leak

 

Initial Steps for Diagnosis

Before diving into repairs, it's essential to identify the source of the leak. Start by clearing out the area under the sink to give yourself a clean working space. Place a bucket or towel under the leaking pipe to catch dripping water. This will help you observe where the water comes from and what kind of leak you're dealing with.

 

Common Areas to Check

1. Drain Pipe:

Often, leaks originate from the drain pipe. Check for loose connections or worn-out gaskets that may need tightening or replacing.

2, Faucet Base:

Sometimes, the leak may be coming from the base of the faucet. Inspect the area for any signs of water.

3. Supply Lines:

These are the pipes that bring water to your faucet. Check for any signs of wear and tear or loose connections.

4. P-Trap:

This is the U-shaped pipe under your sink. Clogs or loose connections here can also cause leaks.

5. Valves:

Check the water shut-off valves for any signs of leakage. Sometimes, these can become loose over time and may need to be tightened.

By following these initial steps and checking common areas, you'll be better equipped to identify the source of the leak and take appropriate action.

 

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Types of Leaks
 Under the Kitchen Sink

Drain Pipe Leaks

One of the most common types of leaks under the kitchen sink originates from the drain pipe. This is often due to loose connections or worn-out gaskets. You may notice water pooling at the base of the pipe or see droplets forming along the pipe's length.

 

Faucet Leaks

Leaks can also occur at the base of the faucet or where the faucet connects to the supply lines. This is often due to worn-out O-rings or a corroded valve seat. Faucet leaks can be particularly troublesome as they can go unnoticed for a long time, leading to water damage in the cabinet below.

 

Supply Line Leaks

The supply lines bring water to your faucet, and leaks here can be due to loose connections or deteriorating pipes. These leaks can be more severe as they involve pressurised water, making it crucial to address them promptly.

 

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DIY Fixes for
 Leaking Pipes

 

Tightening Loose Connections

One of the simplest fixes for a leaking pipe is to tighten any loose connections. Use an adjustable wrench to gently tighten the nuts and bolts connecting the pipes. Be careful not to overtighten, as this can lead to further damage.

Replacing Worn-Out Gaskets

If you notice that the gaskets or O-rings have deteriorated, replacing them can often fix the leak. Make sure to turn off the water supply before attempting this fix. Remove the old gasket and install a new one that matches the size and type of the original.

Using Epoxy Putty or Silicone Tape

For a quick but temporary fix, you can use epoxy putty or silicone tape to seal small leaks. These materials are water-resistant and can provide a temporary seal until you can perform a more permanent repair. Follow the manufacturer's instructions for the best results.

 

Advanced 
Solutions

 

Removing Clogs from the P-Trap

Clogs in the P-Trap can lead to water backup and potential leaks. To remove a clog, first place a bucket under the P-Trap to catch any water. Then, use a pipe wrench to loosen the slip nuts and remove the P-Trap. Clean it thoroughly to remove any debris or build-up and then reattach it, making sure all connections are tight.

Replacing the P-Trap

If the P-Trap is corroded or damaged, it's best to replace it entirely. After removing the old P-Trap as described above, take it to a hardware store to find a matching replacement. Install the new P-Trap, ensuring all connections are secure.

When to Use a Pipe Clamp

For more significant leaks that can't be immediately fixed, a pipe clamp can provide a temporary solution. A pipe clamp is a band made of metal or plastic that can be tightened around a pipe to seal a leak. While this is not a long-term solution, it can prevent further water damage until professional repairs can be made.

 

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Signs of Severe Leaks

If you notice a large amount of water pooling under the sink, hear the sound of running water when all taps are off, or see signs of water damage in the surrounding area, these are indicators of a severe leak that requires immediate professional attention.

Risks of DIY Fixes

While DIY fixes can be effective for minor leaks, they come with risks. Incorrect repairs can lead to further damage and even flooding. If you're not confident in your ability to fix the leak yourself, or if the problem persists despite your efforts, it's advisable to seek professional help.

 

Preventive 
Measures

 

Regular Maintenance Tips

Regular maintenance is key to preventing leaks under your kitchen sink. Here are some tips to keep your plumbing in top shape:

  1. Regularly Check for Leaks: At least once a month, inspect the area under your sink for any signs of moisture or water damage.

  2. Tighten Connections: Periodically check the tightness of all pipe connections and tighten them if necessary.

  3. Clean the P-Trap: To prevent clogs, clean the P-Trap every 3-6 months.

  4. Inspect Gaskets and O-rings: Check the condition of gaskets and O-rings regularly and replace them if they show signs of wear and tear.

 

Products for Leak Prevention

There are several products on the market designed to help prevent leaks:

  1. Thread Sealant: Applying thread sealant to pipe threads can help create a more secure connection.

  2. Pipe Clamps: Having a few pipe clamps on hand can provide a quick fix for unexpected leaks.

  3. Water Leak Detectors: These devices can alert you to leaks even before they become visible, allowing for early intervention.

 

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Final 
Thoughts

In summary, a leaking pipe under the kitchen sink can be a significant inconvenience and lead to more severe problems if not addressed promptly. This article has guided you through identifying the source of the leak, various types of leaks, DIY fixes, advanced solutions, and preventive measures.

 

Contact Dr Leak Plumbing for Expert Solutions

If you're facing persistent issues with a leaking pipe under your kitchen sink and require professional assistance, don't hesitate to contact Dr Leak Plumbing. Our team of experts can diagnose and resolve any plumbing issues, ensuring you enjoy a comfortable and efficient home. Reach out to us today for a comprehensive solution to all your plumbing needs.

 

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Frequently asked questions

Why is my kitchen sink leaking only when I use it?

If your sink only leaks when used, the issue is likely related to the drain pipe or the faucet. Check for loose connections or worn-out gaskets and consider replacing them if necessary.

Can a leaking pipe under the sink lead to mould?

Yes, a persistent leak can create a damp environment conducive to mould growth. This poses health risks and makes it crucial to address the leak promptly.

How much does it cost to fix a leaking pipe under the kitchen sink?

The cost can vary depending on the severity of the leak and the required repairs. Minor fixes may cost as little as $50, while more complex issues requiring professional intervention can run into the hundreds.

Is it safe to use chemical drain cleaners to fix a leak?

While chemical drain cleaners can clear clogs, they are generally not recommended for fixing leaks. These chemicals can corrode pipes over time, potentially worsening the problem.

How can I tell if the leak is coming from the faucet or the pipes?

To determine the source, dry all areas around the sink and then run the water. Observe where the water starts to accumulate. If it's near the faucet, the leak is likely there; if it's at the base of the pipes, then the pipes are the likely culprit.

What should I do if the leak persists despite trying DIY fixes?

If the leak continues despite your best efforts, it's advisable to seek professional help. Persistent leaks can indicate a more severe issue that may require specialised tools and expertise to fix.

What some of our customers say

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Chris arrived promptly, fixed my leaky toilet and went above and beyond by replacing some extra components to ensure a more secure cistern in the future, while staying within the agreed budget. Highly recommend. Meegan, Dee Why
Dee Why, NSW
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Dr Leak Plumbing were fantastic. They quickly assessed the issue with our roof and fixed it effectively and provided advice and additional tasks at the same time.
Randwick, NSW

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