Noisy pipes can be really annoying. You turn on the tap, and instead of the sound of running water, you get a loud banging, a constant rattle, or even a high-pitched squeal. It can make you wonder if something’s about to burst. But the good news? Most noisy pipe problems have simple fixes. You don’t always need a plumber, just a bit of know-how. In this guide, I’ll walk you through why your pipes are noisy, what you can do about it, and when it’s time to call in a pro.
Why Do Pipes Make Noise When Running Water?
Noisy pipes can happen for a few reasons. Each type of noise usually points to a different problem. Understanding these sounds can help you figure out the best fix.
- Banging or Knocking: This is often a sign of water hammer. It happens when water suddenly stops or changes direction.
- Rattling: Loose pipes can vibrate against walls or other pipes.
- Whistling or Squealing: This usually means a problem with the tap or valve, like a worn washer.
- Gurgling: Air trapped in your pipes can cause this sound.
Figuring out which type of noise you’re dealing with is the first step to fixing it.
What Causes Water Hammer, and How Do You Fix It?
Water hammer is one of the most common causes of noisy pipes. It’s a banging sound that happens when the flow of water suddenly stops. When you turn off a tap, water rushes forward and hits a closed valve, causing a shockwave that echoes through the pipes.
How to Fix Water Hammer:
Drain Your Plumbing System:
- Turn off your main water supply.
- Open all the taps in your home, starting with the highest one (usually a bathroom) and working down to the lowest (like an outside tap).
- Let all the water drain out. This can reset air chambers in your pipes, which are meant to absorb these shockwaves.
Install Water Hammer Arrestors:
- These are small devices that absorb the shock when water stops suddenly.
- You can buy them from most DIY stores.
- If you’re comfortable with plumbing, you can fit them yourself. If not, a plumber can do it quickly.
Check for Loose Pipes:
- Sometimes, the shock from water hammer can be worse if your pipes are loose.
- Make sure all exposed pipes are properly secured with brackets or clips.
Why Do Pipes Rattle When Running Water?
If your pipes are rattling, they’re probably not secured properly. When water flows through them, they move slightly, and if they’re loose, this can cause a rattling sound.
How to Secure Loose Pipes:
Inspect Your Pipes
- Look under your sink, in the basement, or in any other exposed areas.
- If you hear the noise in the walls, it can be harder to spot.
Add Pipe Clips or Brackets:
- Use pipe clips to hold the pipes in place.
- Make sure they’re snug but not so tight that they cause damage.
Use Foam Insulation:
- If the pipes are vibrating against each other, wrap them in foam insulation.
- This will not only stop the noise but also protect the pipes.
Why Do My Pipes Whistle or Squeal?
A whistling or squealing sound is usually caused by a problem with a tap or valve. It can happen if the washer is worn out or if the valve isn’t opening fully.
How to Fix Whistling Pipes:
Check the Tap Washers:
- Turn off the water supply to the affected tap.
- Take the tap apart and inspect the washer.
- If it’s worn, replace it with a new one.
Check the Valve:
- If the washer looks fine, the valve itself might be the problem.
- Make sure it opens fully without resistance.
- If it’s damaged, you may need to replace it.
Consider a Pressure Reducing Valve:
- If the noise is coming from more than one tap, high water pressure might be the issue.
- A pressure-reducing valve can bring it down to a safer, quieter level.
What If I Hear Gurgling When Running Water?
Gurgling is usually a sign of air in the pipes. This can happen for a few reasons, like a recent repair, a faulty valve, or a problem with your water supply.
How to Get Rid of Air in Pipes:
Flush Your System:
- Turn off your main water supply.
- Open all the taps in your home, starting with the highest one.
- Let the water run out completely.
- Turn the water back on and let the taps run until the noise stops.
Bleed Radiators (If You Have Central Heating):
- Use a radiator key to release any trapped air.
- Start with the radiator closest to the boiler and work your way around.
Check for Leaks:
- Air can enter your system if there’s a small leak somewhere.
- Look for any signs of a leak, like water stains or dripping.
Why Do My Pipes Only Make Noise at Night?
If your pipes are noisy at night, it could be due to changes in water pressure. At night, when fewer people are using water, the pressure can increase, making any existing problems worse.
How to Manage Night-Time Noise:
Lower Your Water Pressure:
- Install a pressure-reducing valve if you don’t already have one.
Use Timers:
- If your noise is caused by something like a boiler or pump, consider using a timer to avoid these running overnight.
Check Your Boiler Settings:
- If your heating system is set to run overnight, it could be causing the noise.
- Adjust the timer so it doesn’t run while you’re trying to sleep.
When Should You Call a Plumber?
If you’ve tried these fixes and your pipes are still noisy, or if you’re not comfortable working with plumbing, it’s time to call a professional. Some problems are hidden behind walls or floors and need a plumber’s tools and experience to fix. Here’s when to get help:
- If the noise is getting worse.
- If you see water damage or leaking.
- If you have a combination of different noises (like banging and whistling).
Can Noisy Pipes Cause Damage?
Yes, they can. Ignoring noisy pipes can lead to bigger problems, like:
- Leaking Pipes: Constant movement can wear down joints.
- Water Damage: A hidden leak can cause serious damage before you even notice it.
- Burst Pipes: In extreme cases, water hammer can cause a pipe to burst.
How Can You Prevent Noisy Pipes?
Once you’ve fixed your noisy pipes, you can take a few steps to keep them quiet:
- Keep Water Pressure in Check: Install a pressure-reducing valve if you haven’t already.
- Secure Pipes Properly: Make sure all exposed pipes are securely fastened.
- Regularly Maintain Your Plumbing: Don’t wait for a problem—check for loose fittings, worn washers, or any other signs of trouble.
Final Thoughts
Noisy pipes when running water can be really frustrating, but they’re not something you have to put up with. By understanding what’s causing the noise and using these simple fixes, you can enjoy a quieter, more peaceful home. And if you’re ever unsure, don’t hesitate to call a plumber. It’s better to sort it out now than to deal with a leak or burst pipe later.
Do you have noisy pipes in Wigan or somewhere nearby? Contact M Plumbing today for a free, no-obligation quote.
