Taps Not Turning Off or On: Common Causes and DIY Fixes

Dealing with taps not turning off or on can be a real hassle. This common plumbing issue can lead to water wastage, higher bills, and even potential damage to your home. Let’s dive into the most common reasons behind this problem, how to identify if your tap washer needs replacing, and some DIY fixes you can try.

Common Reasons Related to Taps Not Turning Off or On

Worn Washers

One of the leading causes of taps not turning off is a worn-out washer. Over time, these rubber components can crack or degrade due to constant exposure to water pressure and temperature changes. When a washer wears out, it can no longer create a proper seal, leading to continuous water flow even when the tap is turned off. This not only wastes water but can also lead to increased utility bills.

Faulty Cartridges

In cartridge-style taps, a damaged cartridge can cause the tap to malfunction. Cartridges are responsible for controlling the flow of water and mixing hot and cold supplies. If the cartridge is worn or broken, it may not allow the tap to close fully or might cause erratic flow. Replacing a faulty cartridge often resolves these issues and restores normal function.

Mineral Buildup

Hard water can lead to mineral deposits that obstruct the internal components of your tap. Over time, these deposits can accumulate in the aerator or inside the tap itself, making it difficult for the handle to operate correctly. This buildup can restrict water flow and may even cause parts to become stuck, preventing the tap from turning off completely.

High Water Pressure

Excessively high water pressure can force water through the tap even when it’s turned off. This pressure can strain the components, leading to leaks or operational issues. High pressure not only affects taps but can also damage pipes and fixtures throughout your plumbing system, resulting in costly repairs down the line.

Faulty Tap Handle

If the handle is stripped or damaged, it may not engage with the internal mechanisms properly, causing continuous water flow. A faulty handle can prevent you from fully turning off the tap, leading to frustration and potential leaks.

How to Tell if Your Tap Washer Needs Replacing

To determine if your tap washer needs replacing, look for these signs:

Constant Dripping

If your tap continues to drip even when turned off, it’s often a sign that the washer has worn out. A constant drip not only wastes water but can also create unwanted noise and dampness around your sink area.

Difficulty Turning Off

If you struggle to turn off the tap completely, this could indicate that the washer isn’t sealing properly. You might notice that you have to turn the handle more than usual or apply excessive force to achieve a proper shutoff.

Visible Damage

Inspect the washer for cracks or signs of wear. If it looks worn out—discoloured, brittle, or deformed—replacing it is likely necessary. Regular inspections can help catch these issues early before they lead to more significant problems.

DIY Fixes for Taps Not Turning Off or On

If you’re feeling handy, here are some DIY fixes you can try:

Replace the Washer

Shut off the water supply at the main valve before starting any repairs. Carefully disassemble the tap by removing screws and lifting off the handle. Once exposed, remove the old washer and replace it with a new one that matches in size and type. Reassemble everything securely and turn on the water supply to test if it resolves the issue.

Inspect and Replace the Cartridge

For cartridge taps, remove the handle using a screwdriver and check the cartridge for damage. If it’s worn out or broken, replace it with a new one designed for your specific tap model. Ensure all components are seated correctly before reassembling.

Clean Mineral Buildup

If you suspect mineral buildup is causing issues, soak parts in vinegar for several hours to dissolve deposits before reassembling them. A soft brush can help scrub away stubborn buildup from aerators or other components.

Adjust Water Pressure

If high water pressure is an issue in your home, consider installing a pressure regulator on your main line or adjusting existing settings on your plumbing system if applicable. Monitoring your home’s water pressure regularly can help prevent future problems.

Tools You Need to Fix a Tap That Won't Turn Off

Before you start any repairs, gather these essential tools:

Screwdriver

A flathead or Phillips screwdriver will be needed for removing screws on the tap handle and other components.

Adjustable Wrench

This tool will help you loosen and tighten nuts and fittings without damaging them.

Replacement Washers/Cartridges

Ensure you have compatible parts ready before starting repairs. Consult your tap's manual or take old parts with you when shopping.

Plumber's Grease

Lubricating seals with plumber's grease ensures smooth operation and helps prevent future leaks.

Vinegar or Descaling Solution

Use vinegar for cleaning mineral buildup. Soaking parts in this solution can effectively dissolve stubborn deposits without damaging them.

How High Water Pressure Affects My Taps

High water pressure can significantly impact your taps by:

Causing Stress on Internal Components

Excessive pressure puts strain on washers, cartridges, and other internal parts, leading them to wear out faster than they normally would.

Preventing Taps from Closing Completely

When pressure is too high, it may force water through even when you think you've turned off the tap fully—resulting in leaks and wasted resources.

Increasing Noise Levels

High pressure often leads to noisy pipes as water flows through them rapidly. This noise can be quite disruptive in your home environment.

If you suspect high water pressure is an issue in your home, consider having it checked by a professional plumber who can recommend solutions tailored to your system.

In my experience, I once had a stubborn tap that wouldn’t turn off completely. After following these steps, I discovered a worn washer was the issue. Replacing it not only fixed the leak but also made turning the tap smoother than ever!

What if I need to address taps not turning off or on?

If you find yourself facing persistent issues with taps that won’t turn off or on, we’re here to help! At All Needs Plumbing, we offer a $0 callout fee, ensuring you won’t incur extra costs just for us to assess your situation. Our 24/7 same-day service means we’re always available when you need us most—no matter what time of day or night! 

Plus, we provide a 15% seniors discount, making our services even more affordable for our valued senior customers. And if you're considering upgrading your hot water system, take advantage of our current offer of $150 off hot water systems—a great opportunity for those looking to improve their home’s efficiency! Let’s get those taps working perfectly again!