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Dripping Taps? How to Replace a Washer and Stop the Leak

Tue 08 April 2025 - 14:30


Have you ever been kept awake by the incessant drip-drip of a leaky tap? It’s not just a nuisance; it’s a symptom of a worn-out washer that needs replacing. While some might reach for the phone to call a plumber, replacing a tap washer is a practical DIY task that you might want to tackle yourself. In this blog post, we’ll explore the ins-and-outs of tap washers, why they fail, and how you can replace one without turning your kitchen into an indoor pool.

Dripping Taps? How to Replace a Washer and Stop the Leak

Have you ever been kept awake by the incessant drip-drip of a leaky tap? It’s not just a nuisance; it’s a symptom of a worn-out washer that needs replacing. While some might reach for the phone to call a plumber, replacing a tap washer is a practical DIY task that you might want to tackle yourself. In this blog post, we’ll explore the ins-and-outs of tap washers, why they fail, and how you can replace one without turning your kitchen into an indoor pool.

What’s a Tap Washer?

A tap washer is a small, disc-shaped component made from rubber or a similarly soft material, and it plays a crucial role in forming a water-tight seal in your taps. Located inside the tap mechanism, it presses against the valve seat every time you turn off the tap, stopping the flow of water. Over time, this constant pressure wears the washer out, leading to leaks.

Identifying a Washer Issue

The most obvious sign of a failing washer is a dripping tap. However, other symptoms include taps that are unusually stiff to turn or taps that make a screeching sound when operated. These issues often arise from the same root cause: a washer that has either hardened, cracked, or worn down so much that it can no longer form an effective seal.

Tools You'll Need

Before you begin, gather the right tools. You’ll need:

- Adjustable spanner or wrenches

- Screwdrivers

- Replacement washer (ensure it’s the correct size and type for your tap)

- Possibly pliers and a cloth to grip components without causing damage

Safe Preparation – Shutting Off Your Water

The first step in any plumbing repair job is to shut off the water supply to avoid turning a repair into a flood. Locate the stop valve on the water supply line under the sink or in your utility area and turn it to the closed position. Turn on the tap to drain any water left in the pipe and confirm that the water has been completely turned off.

Removing the Tap Handle

With the water off, you can start disassembling the tap. Begin by removing the tap handle. Often, there’s a small screw on the handle, usually hidden under a decorative cap that you’ll need to pry off gently. Once removed, unscrew the handle and put it aside safely.

Accessing the Washer

With the handle off, you’ll see the top of the tap’s valve assembly. Use your adjustable spanner to unscrew this—be mindful as some models might require specific tools. Once you have access to the inside, you’ll see the worn-out washer secured to the valve, typically held in place by a small nut or a retaining pin.

Replacing the Washer

Remove the old washer. It may be brittle or soft, sometimes even sticking slightly to the valve seat if it’s degraded significantly. Fit the new washer in place, ensuring it sits evenly. Re-secure it with the retaining nut or pin, and make sure it’s snug but not overly tight as overtightening can damage the new washer.

Reassembly

Reverse the disassembly process. Replace the valve assembly and tighten it carefully. Reattach the handle and remember to place any decorative caps back on.

The Test Run

Once reassembled, turn the water supply back on. Watch the tap as the water starts to flow through; this is a good time to check for leaks around the handle. If you see leaks, you may need to tighten the assembly a bit more. Finally, turn off the tap and observe any dripping. No drips? Congratulations, you’ve successfully replaced your tap washer!

Preventing Future Leaks

To prolong the life of your new washer and avoid future drips, consider these tips:

1. Don’t over-tighten taps when turning them off.

2. Periodically clean your taps to prevent grit from affecting the washer’s seat.

3. Use high-quality washers for replacements as they tend to last longer.

When to Call a Professional

While replacing a tap washer is generally straightforward, plumbing can sometimes throw a curveball. If you encounter complexities like stripped threads, taps that won’t disassemble, or if there’s significant corrosion, it might be time to call in a professional. Persisting with a repair that’s out of your depth can lead to further damage and more costly repairs.

Conclusion

Tackling a dripping tap through a simple washer replacement can be a satisfying project that saves water and preserves peace in your home. With the right tools and a careful approach, most can manage this repair. However, remember that it's okay to seek professional help when required. Next time your tap starts to drip, you’ll know exactly what to do and when to recognize that a specialist might be needed.