A leaking mixer tap is a common issue in both kitchens and bathrooms, often caused by worn-out components like the valve or ceramic disc. This plumbing problem can lead to constant dripping, resulting in increased water bills and water wastage. Fixing a leaking tap promptly is crucial to prevent further damage to the tap and to maintain efficient water flow. With a few basic tools like a screwdriver and an allen key, you can gain access to the cartridge and address the leak effectively.
Common Leak Points in a Mixer Tap
Understanding where your mixer tap might be leaking can help you diagnose and fix the issue effectively. Here are the most common leak points in a mixer tap and what each involves:
Base of the Mixer Tap
Leaks at the base of your mixer tap are often due to worn-out rubber washers or O-rings. These seals are crucial for preventing water from escaping where the tap body meets the sink. To fix this, you’ll need to remove the tap, replace the washers, and reassemble it, ensuring a tight seal to stop the leaking water.
Around the Mixer Handle
A leaky tap around the handle is usually caused by issues with the internal cartridge or valve. The cartridge controls the flow of hot and cold water and can wear out over time, leading to drips when the handle is moved. Accessing this part requires removing the handle, often held by a grub screw, and replacing the cartridge.
At the Tap Spout
Leaks from the tap spout typically occur when the ceramic disc inside the cartridge wears down. This disc helps regulate water flow and temperature but can crack or wear out, causing a dripping tap. Repairing this involves removing the spout and replacing the damaged disc to restore proper function.
Underneath the Sink
Leaks from the supply pipes below your sink are often due to loose connections or worn-out washers. These pipes connect the tap to your home’s water supply and should be checked for tightness and integrity. Tightening the connections or replacing the washers can resolve leaks from these areas.
Around the Indicator Button
The indicator button, which shows the hot and cold settings, can also be a leak point if the seals around it degrade. Leaking around this area can cause water to flow down the tap body and pool at the base. Fixing this requires removing the indicator button, replacing the seals, and ensuring the button is securely reinstalled.
How to Determine If the Leak is from the Spout or Base
To determine if the leak is from the spout or base of your mixer tap, first turn off the water supply at either the stop valve or isolation valve. Dry the tap completely, then slowly turn the water back on and observe where the water starts to appear. If you notice water seeping around the base, it’s likely the rubber washer or O-ring is worn out. Conversely, if the water drips from the spout when the tap is off, the issue is probably with the internal cartridge or the ceramic disc, which controls the flow of cold and hot water.
Step-by-Step Guide to Fix a Mixer Tap Leak
Fixing a leaking mixer tap involves several precise steps to ensure the leak is properly addressed. Here’s a comprehensive guide to help you through the process:
Step 1: Turn Off the Water Supply
Begin by turning off the water supply to your tap. Locate either a stop valve or isolation valve under the sink and turn it off to stop water flow. This step is crucial to prevent water from spilling and going down the drain while you work on the tap.
Step 2: Remove the Mixer Tap Handle
To access the internal components, you need to remove the mixer tap handle. Locate the screw, usually hidden under the indicator button or a decorative cap at the top of the tap. Use an appropriate tool like an allen key or screwdriver to loosen and remove the screw, allowing you to lift the handle off the cartridge spindle.
Step 3: Inspect and Replace the Cartridge
Once the handle is removed, inspect the cartridge for signs of wear or damage, which can cause the mixer handle to stick or leak. If the cartridge is faulty, replace it with a new one from a similar tap set. This part is responsible for controlling the flow of hot and cold water through the mixer.
Step 4: Check and Replace the Tap Washer
Underneath the cartridge, you will find the tap washer, which seals the tap and prevents leaks. Remove the washer and inspect it for wear or damage. A worn-out washer would cause leaking water at the base. Replace it with a new one to ensure a tight seal when reassembling the tap.
Step 5: Reassemble the Tap Mixer
Reassemble the tap mixer by reversing the disassembly steps. Place the new cartridge and washer in position, secure the mixer handle to the base with the grub screw, and reattach any decorative caps. Ensure all parts of the tap are tightly secured to prevent future leaks.
Step 6: Turn the Water Supply Back On and Test
Reactivate your water supply by turning the stop valve or isolation valve back on. Test your mixer tap by turning it on and checking for leaks around the base and spout. Make sure the tap is fixed properly and that the water flows smoothly without any dripping or leaking.
Repairing a Dripping Mixer Tap
Repairing a dripping mixer tap requires understanding where the leak is originating. Here’s a detailed guide to help you fix leaks from the spout and the base of your mixer tap.
Fixing a Drip from the Spout
Over time, the cartridge can wear out, causing a continuous drip. To fix this, turn off the stop or isolation valve to stop water flow, then use tools and the mixer instructions to remove the handle and access the cartridge. Replace the old cartridge with a new one, ensuring it fits properly to prevent water from falling down the drain.
Addressing a Leak from the Base
Rubber washers or O-rings that seal the tap to the sink can wear out or become damaged over time, leading to water seeping out at the base. To address this, first turn off the stop valve can be found under the sink. Then, disassemble the tap by removing the cap from your mixer and using tools to take off the handle. Replace the worn-out washers or O-rings with new ones, reassemble your tap, and ensure everything is tightly secured.
When to Call a Professional Plumber
While fixing a leaking mixer tap can often be a DIY task, there are times when professional help is necessary. Persistent leaks, complex tap sets, high water pressure issues, and faulty cartridges or valves often require a plumber’s expertise. Damaged components or the installation of new taps also benefit from professional attention to ensure proper function and avoid future leaks. Trust Plumbwell Plumbing Services to handle your mixer tap issues efficiently and effectively. Contact us at (02) 9064 2861 for prompt and professional service.