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How Do I Change a Washer on A Mixer Tap | Plus Plumbing

A leaking tap isn’t just annoying; it can also waste significant amounts of water. In fact, a single drip per second can waste up to 20 litres of water a day! Over time, this not only increases your water bill but also puts unnecessary strain on our already stretched water resources. That’s why it’s essential to address the problem promptly. Changing a washer is often the simplest and most effective solution for a leaky mixer tap.

Overview

In this guide, we’ll cover the tools you need, the steps involved, and tips to ensure a successful washer replacement. Whether you’re a seasoned DIYer or a complete novice, this guide from Plus Plumbing will help you get the job done.

What is a Tap Washer?

A tap washer is a small, often rubber, disc that plays a vital role in preventing water from leaking when the tap is turned off. Washers sit at the base of the tap valve and create a tight seal against the water supply when the tap is not in use. Over time, due to water pressure and regular use, washers can wear down or become damaged, resulting in leaks. This is particularly common in mixer taps, where both hot and cold water run through a single spout.

Why Do Washers Wear Out?

The constant opening and closing of the tap cause the washer to compress repeatedly. This compression can eventually lead to wear and tear, especially in high-pressure systems or taps that are used frequently. In addition, certain types of water, such as hard water with high mineral content, can exacerbate the wear and tear on washers, causing them to degrade more quickly.

Tools You Will Need

Before you start, it’s important to gather all the necessary tools. Here’s what you’ll need:

New washers (ensure they match the size of the original washer)
Flat-head screwdriver
Adjustable spanner or wrench
Plumber’s tape (for re-sealing the tap components)
Cloth or towel (to protect surfaces and catch drips)
Silicone grease (to lubricate the components)

Optional Tools:

Tap reseater (if the tap seat is damaged)
O-ring replacement kit (if your tap has worn O-rings)

Having the right tools on hand will make the job much easier and ensure a proper fix.

Step-by-Step Guide to Changing a Washer on a Mixer Tap

Now, let’s get into the step-by-step process of changing the washer on your mixer tap. Follow these steps carefully, and you’ll have your tap leak-free in no time.

1. Turn Off the Water Supply

Before you do anything, turn off the water supply to your tap. You can do this by locating the isolation valves under the sink or shutting off the main water supply to your house. Once the water is off, turn the mixer tap on to release any residual water in the pipes. This step is crucial to avoid any unwanted water spills while you’re working.

2. Remove the Tap Handles

Most mixer taps have handles for both hot and cold water. To access the washer, you’ll need to remove the handles. Start by locating the small screw on the side or underside of each handle. Use your flat-head screwdriver to remove these screws. If your tap has decorative covers (often marked with an “H” for hot and a “C” for cold), carefully pry them off to reveal the screw.

Once the screws are out, gently lift the handles off the tap. You might need to wiggle them a little if they’re stuck, but avoid applying too much force to prevent damage.

3. Unscrew the Tap Valve

With the handles removed, you’ll now see the tap valve. This is the component that controls the flow of water. Use your adjustable spanner to carefully unscrew the valve from the tap body. Be cautious as some valves can be tightly fixed, and too much force could damage the tap.

If your tap is particularly old, it might be a good idea to apply some silicone grease to the threads of the valve when reinstalling it later. This will make it easier to remove in the future.

4. Remove and Replace the Washer

Once the valve is removed, you’ll see the washer located at the bottom of the valve. Use your flat-head screwdriver to gently prise the old washer out. Take note of its size and shape, as you’ll need to match it with the new washer.

After removing the old washer, simply place the new one in its position. Ensure that it sits snugly in the valve, as a loose washer can cause further leaks.

5. Check and Replace O-Rings (If Applicable)

Some mixer taps also have O-rings that help create a watertight seal around the tap’s spout. If your tap has O-rings, this is a good time to inspect them for wear and tear. If they’re cracked or damaged, replace them with new ones from an O-ring replacement kit.

6. Reassemble the Tap

Now that you’ve replaced the washer (and O-rings, if necessary), it’s time to reassemble the tap. Begin by screwing the valve back into the tap body using your adjustable spanner. Once the valve is securely in place, reattach the tap handles by reversing the steps you took to remove them. Don’t forget to screw the handles back on tightly to avoid them coming loose.

7. Turn the Water Back On and Test

With the tap reassembled, you can now turn the water supply back on. Slowly open the isolation valves or main supply to allow water to flow back into the system. Once the water is on, test the tap by turning it on and off several times. If there are no leaks, congratulations—you’ve successfully changed the washer on your mixer tap!

Tips for Preventing Future Washer Issues

Avoid over-tightening the tap: One of the most common causes of washer wear is over-tightening the tap when turning it off. A gentle turn is all that’s needed to stop the flow of water.
Regular maintenance: Periodically check your taps for signs of wear and tear. Catching small issues early can prevent major leaks down the line.
Use quality washers: Cheap washers might save you a few dollars initially, but they tend to wear out faster. Invest in high-quality washers for a longer-lasting fix.

When to Call a Professional

While changing a washer is a relatively simple task, there are times when it’s best to call in a professional. If your tap continues to leak after replacing the washer, or if you encounter any issues during the process, don’t hesitate to reach out to a licensed plumber. At Plus Plumbing, we’re always ready to assist with any plumbing issues you might have, from leaky taps to full kitchen and bathroom renovations.

Conclusion

Changing a washer on a mixer tap is a straightforward DIY task that can save you both water and money. By following the steps outlined in this guide, you can tackle a leaky tap with confidence. However, if the problem persists or you’re unsure about any part of the process, don’t hesitate to contact Plus Plumbing for professional assistance.

Remember, addressing a leaking tap promptly not only reduces water waste but also helps prevent further damage to your plumbing system. So, grab your tools, and get your mixer tap back in top shape today!