Alexei Volkov
A leaking tap is a common household issue that can cause a lot of frustration and wasted water. The constant dripping sound can be annoying, and the water wastage can lead to increased water bills. There are several reasons why a tap may start leaking, such as a worn-out or damaged washer, faulty glands, or high water pressure. In some cases, the problem could be with the plumbing pipes rather than the tap itself. This article will provide an overview of the common causes of leaking taps and offer some solutions to fix them.
| Characteristics | Values |
|---|---|
| Cause of leaking tap | Worn-out or damaged washer, high water pressure, faulty glands, broken O-rings, damaged pipes, mineral build-up, poor installation, damaged cartridge, damaged ceramic disc |
| Solution | Replace the washer, install a pressure regulator, replace the glands, replace O-rings, repair or replace pipes, clean taps, improve installation, replace cartridge, replace ceramic disc, use PTFE tape, tighten loose parts |
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What You'll Learn
Identify the cause of the leak
A leaking plastic tap can be a huge problem. It can cause your water bills to rise, and if left unattended, it can cause water damage to your home. Before you start repairing a leaking tap, it is important to identify the cause of the leak.
First, check the tap to see exactly where the water is leaking from. Knowing the location of the leak is important as this determines the next steps. If the tap is leaking from the handle, the packing nut behind the faucet knob may be loose. Packing nuts usually get loose over time due to water pressure and other factors. If the faucet is leaking at the spout, the problem could be the O-ring.
If the tap is leaking from the base of the spout or nozzle, the O-ring is likely the culprit. The O-ring is a thin, ring-shaped rubber piece that serves as a watertight seal to prevent the tap from leaking. Over time, the O-ring can loosen or wear out, causing water to drip.
Another common cause of a leaking tap is a damaged washer. The washer is a small rubber or plastic seal located inside the tap handle that regulates the flow of water. Due to constant use, the washer can wear out, break, or become corroded, resulting in a leaking tap.
If the tap is leaking even when it is turned off, the problem is likely the washer and jumper valve. A broken washer and jumper valve can cause the tap to leak even when it is closed.
In some cases, a leaking tap may not be directly related to the tap itself but could indicate an issue with the plumbing pipes. Cracked or damaged pipes can cause water to leak at the tap connection point.
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Replace the washer
Before replacing the washer, it is important to turn off the water supply to the tap. Look for the isolation valve under the sink or basin and shut it off. If you can’t find an isolation valve, you may need to turn off the main water supply. This step is crucial for preventing accidents and water damage. It is also important to place a plug in the plughole to prevent losing any small parts down the drain.
Next, use a screwdriver or Allen key to remove the tap handle. You may need to use a spanner to unscrew the section known as the headgear. Once the tap handle has been removed, you can carefully use a flat-head screwdriver to take out the old washer. It is a good idea to use an old toothbrush to remove any debris.
Now, insert a new washer of the appropriate size. Wind PTFE or plumber's tape around the threads of the tap, and then put the valve back in. Finally, reassemble the tap by following the disassembly steps in reverse. Once the tap is reassembled, turn the water supply back on and test the tap for any remaining leaks.
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Tighten loose parts
Before you begin any work on your tap, it is important to turn off the water supply. Look for the isolation valve under the sink or basin and shut it off. If you can’t find an isolation valve, you may need to turn off the main water supply for your home. This is an important safety step to prevent accidents and water damage.
If your tap is still leaking from the packing nut, try loosening the packing nut and applying PTFE to the thread before tightening it up again. If your tap now stops leaking when you turn your water back on, you’re done!
If your tap is leaking from the spout, it’s most likely due to an old or damaged washer inside the tap. To fix this, grab your adjustable spanner and unscrew the larger nut until the tap head comes away. Once removed, you’ll see the washer at the end of the tap valve. Carefully use your flat-head screwdriver to remove the old washer. Use an old toothbrush to remove any debris. Insert the new washer. Wind your PTFE or plumber’s tape around the threads of the tap, then put the valve back in.
If your tap is leaking from the body of the tap, around the spindle, the base of the swivel spout, or the diverter level on a shower mixer tap, it is likely your glands. The glands are the seal between the body of your tap and the spindle or O-ring seal. Soapy water from hands can run down the spindle and wash out the grease of the gland, which keeps the joint completely watertight. Modern taps often don’t have a gland, so you may need to replace the O-ring seal.
If you have a leaking tap with a ceramic disc, it will most likely result in a leaking/dripping tap. In this instance, you must replace the entire cartridge. Take the faulty piece with you to your local plumbing merchants to ensure you purchase the right size and left or right-handed piece.
If you have a washerless faucet, you may need to replace the cartridge, disc, or ball to maintain water flow. Fixing a washerless faucet is straightforward, and you can find all the parts you need at your local hardware store.
If you have a cartridge faucet, you may need to replace the O-ring. Take the cartridge from the tap body and cut off the O-ring using a utility knife. After this, you can replace the ring with one coated in plumber’s grease. If the damage is extensive, consider replacing the entire cartridge.
For a ball faucet, you can install new springs, cam washers, and valve seats to fix a leaking tap. Ensure that the replacement parts are compatible with your faucet type.
For a ceramic disk-type faucet, replace the neoprene seals under the cylinder. Like with ball faucets, you should ensure the new parts are compatible with the tap. If the damage is extensive, consider replacing the entire cylinder.
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Apply PTFE tape
PTFE tape, also known as Teflon tape, is a versatile and professional-strength adhesive tape. It is used to seal water, gas, and air leaks through threaded connections. PTFE tape is a good temporary solution to stop a dripping tap and seal the pipe connection. It is easy to use and readily available in hardware stores.
Before you start, ensure you have the right type of PTFE tape for your needs. Gas-rated PTFE thread seal tape, for instance, is thicker and denser than standard PTFE tape for liquid plumbing. White is the standard colour for basic plumbing jobs.
Next, turn off the water supply. You can do this at the isolation valve under the sink or basin. If you can't find an isolation valve, turn off the main water supply. This step is crucial to preventing accidents and water damage.
Now, carefully disassemble the tap to access the leaking joint. You may need a screwdriver or wrench for this step. Once you have removed the tap handle and other components, clean the threads with a clean cloth or all-purpose cleaner. Remove any dirt and debris from the threaded areas for a smooth operation.
After cleaning, wrap the PTFE tape around the threaded area in the same direction. Remember not to overtighten it. Two to four wraps are usually sufficient to cover the threaded parts. Gently smooth the tape with your fingers and press it into the threads to ensure a tight seal.
Finally, reassemble the tap by carefully reversing the disassembly steps. Turn on the water supply and gradually open the tap to check for any leaks. If the PTFE tape has been applied correctly, it should create a watertight seal and stop the dripping.
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Consult a plumber
While leaking taps can sometimes be fixed with a DIY approach, there are times when it is best to consult a professional plumber.
Firstly, if you are uncertain about the cause of the leak or how to fix it, it is best to call a plumber. A qualified plumber will be able to accurately assess the damage, identify the root cause, and carry out the necessary repairs. They will also have the appropriate licenses, insurance, and tools to get the job done efficiently and effectively.
Secondly, if the leak is caused by cracked or damaged pipes, you should seek professional assistance. A licensed plumber will be able to locate and repair the damaged section of the pipe, ensuring a lasting solution. They will also be able to advise on any necessary pipe replacements.
Thirdly, if your tap has water flowing from the body and spindle when turned on, or liquid leaking from the cover plate, it is likely an issue with the O-ring. While this may be an easy fix, if you are unsure about how to proceed or access the O-ring, it is best to consult a plumber. They will be able to disassemble the tap, replace the O-ring, and ensure a proper fit and tight seal.
Lastly, if you have tried the DIY fixes and your tap is still leaking, it is time to call a plumber. They will be able to inspect your tap, identify any issues, and carry out the necessary repairs. They may also be able to advise on preventative maintenance and recommend solutions to avoid future leaks.
Remember, before a plumber arrives, you can turn off the water supply to prevent flooding and further damage. You should also clear out any cupboards or spaces connected to the leaky tap to provide easy access for the plumber.
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Frequently asked questions
Some common reasons for a leaking tap include a worn-out or damaged washer, broken O-rings, and loose connections.
First, turn off the water supply. Then, disassemble the tap handle and replace the old washer with a new one of the appropriate size. Reassemble the tap and turn the water supply back on. If the leak persists, you may need to consult a professional plumber.
A temporary solution to stop a leaking plastic tap is to use PTFE or plumber's tape. Apply the tape to the threaded parts of the tap to create a watertight seal and prevent leaks.
