How to fix a dripping tap

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A dripping tap is a common problem. We’ll probably all have one at some point. But a drip can become a bigger issue if it doesn’t get sorted. The good news is, fixing a leaking tap is usually simple.

Follow our step-by-step guide on how to fix a compression valve tap (traditional tap) or ceramic disc tap (tap that only twists a quarter of the way).

What you’ll need to fix a dripping tap

To fix it, you’ll need an adjustable spanner, a flathead screwdriver, and a cross-head screwdriver. And you might need a pair of scissors and replacement parts if something’s broken. We’d also recommend wearing protective goggles.

Before you get started, it’s a good idea to cover the plughole so you don’t lose any small parts when you take the tap apart. And contact an engineer or your home care provider if there’s anything you don’t feel confident doing yourself.

What’s a compression valve tap?

A compression valve works by screwing the head of the tap to either start or stop the water flow. Most traditional taps work like this, with a twisting open/close function.

If your tap needs to turn more than a quarter of the way to release a full flow of water, that means it’s a compression valve tap.

How to fix a compression valve tap

1. Turn off the water supply

You might have a built-in isolation valve, which is usually found on the pipes underneath the sink. If so, you can use your screwdriver to turn it until the water switches off.

If you can’t find a valve, then you can use the stopcock to turn off your water. The stopcock is usually under the kitchen sink.

Keep turning the valve or stopcock until there’s no water flowing from the tap. And make sure the tap is completely drained before trying to take it apart.

2. Remove the handle cover

If your tap has a handle cover or cap, then you’ll need to remove it to find the screw. For both hot and cold taps, the screw should be under the cover. You can use a screwdriver to take it off, or unscrew it by hand. It’s best to remove it fully, so you can see the top of the valve.

3. Unscrew the valve cover

Once you can see the valve at the top of the tap, you’ll need to loosen the cover (the part that turns). There are different types of valve covers, but you should be able to follow these steps for all of them:

• Twist the top screw with a screwdriver
• Use an adjustable spanner to loosen the valve
• Remove the valve
• Hold the valve steady with an adjustable spanner
• Use your screwdriver to remove the screw that’s holding the washer in place

4. Check for any issues with the tap seat

A dripping tap is usually caused by a problem with the tap seat. That’s the part the washer sits on and creates a seal when the tap’s closed. After wear and tear, it can become rough, which stops it from working properly. And you can usually spot this – it might look rusty or worn.

You can use a seat grinder tool to grind the rest of the part down to a smooth, flat surface for the washer to sit on. Or you can buy a combined washer and seating set from your local DIY shop. This might be a good solution if you're not sure which part is causing the problem.

5. Check and replace your tap washer

If your tap seat is working, then you can check the washer for wear and tear, and just replace that part instead.

6. Reassemble the tap and check for drips

Once you’ve replaced the washer or tap seat, you’ll need to screw the valve, cover, and tap handle back in and switch the water on. If your tap’s still dripping, now’s the time to call a trained plumber to take a look.

How to fix a ceramic disc tap

If your tap only twists a quarter of the way, then it’s probably a ceramic disc tap. This means it’s using a ceramic disc inside the valve. So in this case, you should:

1. Turn off the water

You might have a built-in isolation valve, which is usually found on the pipes underneath the sink. If so, you can use your screwdriver to turn it until the water switches off.

If you can’t find a valve, then you can use the stopcock to turn off your water. The stopcock is usually under the kitchen sink.

Keep turning the valve or stopcock until there’s no water flowing from the tap. And make sure the tap is completely drained before trying to take it apart.

2. Test the tap

Make sure the tap is completely drained before taking it apart. Again, put the plug in the sink so you don’t lose any small parts.

3. Remove the headgear

All ceramic disc taps will have removable tops, known as headgear. It should unscrew and lift off easily by hand. Sometimes, you might need to use a screwdriver or an Allen key.

4. Unscrew the nut at the neck of the valve

You’ll need to remove the hexagonal nut at the neck of the valve. This can be quite stiff, so hold the tap with your other hand to keep it steady and avoid damaging any pipework. You can then use an adjustable spanner to unscrew the nut.

5. Remove the ceramic disc valve

Now you can take off the entire ceramic disc valve (cartridge). If it shows signs of wear and tear, then it’s best to replace it.

Ceramic disc valves come in two types – left and right. So double check which one you’ll need before you look for a replacement.

Finally, secure the valve and reassemble the tap in reverse order.

What to do if your tap is still dripping

If you’ve tried to fix the leak by following these steps and your tap is still dripping, it’s time to get in touch with a professional.

We can fix it for you

We know taking out cover isn't for everyone. But at OVO, we think you should still get the best support when problems happen.

That’s why, if you don’t have cover, we can set you up with our most comprehensive plan and repair any dripping taps that are not caused by a failed ceramic washer. It’s called Home Recover.

If you’re an OVO customer and something’s gone wrong, we’ll fix the problem for free when you take out our Complete plan. And even if you’re not with us, we’ll fix your fault for a £79 fee when you sign up to our Complete plan. Just give us a call on 0330 102 8905 or get started online.¹