Learning how to fix leaking pipes under sinks is an essential skill for homeowners in the Kansas City metropolitan area. Leaky sinks can cause significant damage if not addressed promptly and correctly. In this comprehensive guide, we will explore various aspects of identifying and fixing leaking sink issues in both bathroom and kitchen settings.

We will begin by discussing the signs of a leaking pipe, its causes, and potential damages that may arise from it. Once the signs of a leaking pipe have been identified and its potential damages assessed, we’ll guide you through the process of shutting off your water supply and replacing old pipes with new ones fitted correctly.

Additionally, we’ll highlight the benefits of professional plumbing services available in Kansas City such as B&L Plumbing Services – including their expertise in handling drain assemblies and using plumber’s tape or plumber’s putty effectively. Lastly, we’ll share valuable tips on preventing future leaks through regular maintenance inspections while avoiding common pitfalls like over-tightening connections or choosing low-quality materials.

Table of Contents:

1. Identifying the Problem

Before you can fix a leaking pipe under your sink, it’s crucial to identify the problem and understand its causes. Once the issue has been identified, we can then explore the indicators of a leaking pipe, potential causes for such leaks, and any damage that may result from an unaddressed leak.

a. Signs of a Leaking Pipe

Some common signs that indicate you have a leaking pipe under your sink include:

  • Puddles or water stains: If you notice standing water or staining around the base of your sink cabinet, it could be due to a leaky pipe.
  • Mold or mildew growth: Persistent moisture from leaks creates ideal conditions for mold and mildew growth in dark spaces like cabinets.
  • Foul odors: A musty smell coming from beneath your sink is often indicative of stagnant water caused by leakage.
  • Inflated water bills: If there’s an unexplained increase in your monthly water bill without any changes in usage habits, it might be because of hidden plumbing issues such as leaks.

b. Causes of a Leaking Pipe

A variety of factors can contribute to pipes leaking under sinks; some common ones are listed below:

  1. Corrosion: Over time, pipes may corrode due to exposure to elements like moisture and chemicals, leading to leaks.
  2. High water pressure: Excess water pressure can cause pipes to burst or joints to come apart.
  3. Clogs: Obstructions in pipes can cause pressure to build up, leading to leaks.
  4. Shifting soil: If soil shifts due to changes in moisture levels or earthquakes, it can cause pipes to crack or break.
  5. Temperature changes: Extreme changes in temperature can cause pipes to expand and contract, leading to leaks.
  6. Age: As pipes age, they become more prone to leaks and other problems.

It is important to be able to identify a leaking pipe before attempting any repairs. This knowledge can help you avoid potential damage and costly repair bills in the future. Next, we’ll look into ways to address the leaking pipe once it has been identified.

2. Fixing the Problem

If you have identified a leaking pipe under your sink, it is essential to address the issue promptly to prevent further damage and costly repairs. In this part, we will look into the measures needed to shut off the water supply, take out the aged pipe and install new pipes and fittings.

a. Shutting off the Water Supply

Before attempting any repair work on your plumbing system, it is crucial to shut off the water supply first. Locate your home’s main shutoff valve or find an isolation valve near the affected area if available. Turning off these valves will stop water flow temporarily while you fix the leak.

b. Removing the Old Pipe

To remove a damaged pipe from under your sink:

  1. Place a bucket underneath to catch any remaining water in the pipes.
  2. Gently loosen all connections using adjustable wrenches or pliers.
  3. Carefully remove each section of piping one at a time until reaching where the leak originates.

Note: Be cautious not to cause additional damage when removing pipes; excessive force can lead to more significant issues down line like cracked joints or stripped threads on fittings.

c. Installing New Pipes and Fittings

The final step in fixing a leaking pipe under your sink involves installing new pipes and fittings as needed:

  1. Select appropriate replacement parts based on type material (e.g., PVC plastic), size diameter length required for specific configurations beneath kitchen and bathroom sinks alike. Ensure compatibility with existing components before purchasing anything new.
  2. Apply pipe joint compound or plumber’s tape to threaded connections for a watertight seal.
  3. Attach fittings and pipes in the correct order, tightening each connection with adjustable wrenches or pliers until snug but not overtightened.

If you are unsure about any aspect of this process, it is always best to consult with a professional plumber like B&L Plumbing. They have the expertise and experience necessary to ensure your plumbing repairs are done correctly and safely.

Though it may appear intimidating, with the correct instruments and information, mending a leaking pipe beneath the sink is achievable. For plumbing services in Kansas City, B&L Plumbing Services is the go-to choice with their expert staff.

Key Takeaway: 

To fix a leaking pipe under your sink, you must first shut off the water supply and remove the old pipe by gently loosening all connections. Then, install new pipes and fittings in the correct order while ensuring compatibility with existing components for a watertight seal. Therefore, it is advisable to seek the expertise of a qualified plumbing specialist in order to ensure a successful outcome.

3. Professional Plumbing Services in Kansas City

Handling a broken pipe in your sink can be exasperating and take up a lot of time, particularly if you don’t have any knowledge of plumbing fixes. Turning to experienced plumbing specialists for assistance can be advantageous and provide long-term solutions. Let’s explore the benefits of hiring professionals like B&L Plumbing in Kansas City and why they should be your go-to choice for all your plumbing needs.

a. Benefits of Professional Services

  • Expertise: Professionals have years of experience dealing with various types of leaks and can quickly identify the root cause of the problem.
  • Safety: Hiring a professional ensures that all safety protocols are followed during repair work, minimizing risks associated with DIY fixes.
  • Quality Workmanship: A skilled plumber will use high-quality materials and tools to ensure that the repair is done correctly, preventing future leaks or damage.
  • Saves Time & Money: Although it may seem more cost-effective to handle repairs yourself, hiring a professional saves you time by getting the job done right from the start – avoiding costly mistakes or repeat issues down the line.

b. B&L Plumbing Services in Kansas City

B&L Plumbing has been providing top-notch plumbing services throughout Kansas City for over two decades. Their team consists of licensed plumbers who are dedicated to delivering exceptional customer service while addressing any plumbing issue efficiently and effectively. Some key services offered by B&L Plumbing include:

  • Pipe leak detection & repair
  • Drain cleaning,
  • Water heater installation & repair
  • Sewer line repair & replacement
  • Emergency plumbing services, and more.

c. Why Choose B&L Plumbing?

Beyond their extensive experience and comprehensive range of services, there are several reasons why homeowners in the Kansas City metropolitan area should choose B&L Plumbing for all their plumbing needs:

  • Affordable Pricing: B&L Plumbing offers competitive pricing without compromising on quality or service.
  • Prompt Response Time: Their team is available to respond quickly to your call, ensuring that any plumbing issue is addressed as soon as possible.


Homeowners in the Kansas City region require expert plumbing services to guarantee a secure and healthy residence. With regular maintenance and inspections, you can avoid costly DIY repairs or future leaks; let’s look at some tips for preventing them.

Key Takeaway: 

Dealing with a leaking pipe under your sink can be frustrating, so it’s best to rely on professional plumbing services like B&L Plumbing in Kansas City. Hiring professionals to save time and money, ensures safety protocols are followed, and provides quality workmanship. B&L Plumbing offers competitive pricing without compromising on service or response time.

4. Tips for Preventing Future Leaks

Preventing future leaks under your sink is essential to avoid water damage and costly repairs. In this section, we will discuss the importance of regular maintenance and inspections, avoiding DIY repairs, and choosing quality materials and fixtures.

a. Regular Maintenance and Inspections

Regularly checking your plumbing system can help you detect potential issues before they become major problems. Schedule routine maintenance and inspections with a professional plumber like B&L Plumbing to ensure that all components are in good working condition. They will inspect pipes for signs of corrosion or damage, check connections for tightness, test valves for proper function, and look out for any other possible issues.

b. Avoiding DIY Repairs

While it may be tempting to fix minor plumbing issues yourself, attempting DIY repairs without pr