Water hammer and noisy pipes often come from pressure changes, loose pipes, or worn parts inside your plumbing system. That’s why it helps to learn why these noises happen and what to do about them.
All About Water Hammer
Water hammer is when a sharp bang or thud happens when a faucet or appliance suddenly shuts off. Water flows through your pipes with force. When a valve closes quickly, the moving water hits the closed end of the pipe. This creates a sudden surge in pressure. That surge sends shock waves through your pipes, which you hear as either a single loud bang or a series of knocks.
Appliances like ice makers, toilets, and washing machines commonly trigger water hammer. These appliances use solenoid valves, which snap shut instantly. The sudden stop in water flow is what causes the problem. Repeated water hammer can loosen fittings, damage valves, and shorten the life of your plumbing system.
Noisy Pipes Aren’t Always Water Hammer
Water hammer isn’t always the cause of your noisy pipes. You might hear rattling, ticking, or gurgling sounds during normal water use. Different situations can produce different sounds. A partially closed shutoff valve or a worn washer inside a faucet can cause whistling. If your pipes are humming, it’s likely due to high water pressure or a vibrating pipe. Ticking or creaking noises can happen when hot water pipes expand and rub against wood framing. And gurgling can mean there’s a venting issue or a partial blockage in a drain line.
How Old Plumbing Materials Affect Noise
The type of pipes you have can play a role in whether or not they become noisy. For example, PVC pipes can make noise when they shift due to temperature changes. This is more likely if they run through tight holes or rest against bare studs. If you have an older home, you might have galvanized pipes. As they corrode, water can cause a vibration or humming sound as it flows through. These age-related issues make pipe noise more noticeable.
Finding Solutions for Noisy Pipes
Plumbing noises can grow into expensive repairs if ignored for too long. It’s best to call a plumber, but you can help by providing some information. First, pay attention to when the noise occurs. Is it during shutoff, normal flow, or only with hot water? These details will help your plumber identify the cause.
Your plumber will inspect any accessible pipes in areas such as basements, crawlspaces, or utility rooms. This often reveals the source of plumbing noises. If a pipe moves easily when touched, a strap or clamp can secure it. A pipe that rattles or hits the framing when it gets hot can be insulated with foam or rubber. You might even discover that repairing or replacing a shutoff valve solves the problem.
Keep Water Pressure in Check
High water pressure increases the chances of water hammer and noisy pipes. If you suspect high pressure, attach a water pressure gauge to an outdoor faucet. The gauge measures your water pressure, sort of like a tire pressure gauge. The ideal range for most homes is 50-60 psi. If your pressure is much higher, a plumber can adjust or install a pressure-reducing valve. Proper pressure protects your pipes, water heaters, faucets, and appliances from long-term wear and tear.
Water Hammer Arrestors
A water hammer arrestor can quiet your noisy pipes. The arrestor contains sealed air or gas chambers that absorb the pressure surges that cause water hammer. Common arrestor locations include near washing machines and other fixtures with fast-closing valves. If the arrestor stops working, you’ll get warning signs.
If loud banging noises return after months of quiet pipes, the arrestor is probably faulty. You might also notice pipes shaking when a toilet or appliance shuts off. In some cases, moisture or corrosion forms around the arrestor. This likely means its internal diaphragm has worn out. When these signs appear, the arrestor can no longer cushion sudden pressure spikes.
Protecting Your Home Moving Forward
Regular maintenance and prompt attention to noises help prevent plumbing damage. During maintenance, a plumber can check exposed pipes and make sure valves are in good condition. Keeping an eye on your water pressure is a good idea as well. You can also reduce plumbing noise by making a few simple changes around your home. For example, insulating accessible pipes helps prevent rattling. Replacing worn shutoff valves and adding new pipe straps in loose areas helps create quieter plumbing. These small improvements reduce the chances of sudden noise returning.
TYCO Plumbing is the team to call when your pipes are calling out for help. We specialize in solving all kinds of plumbing-related problems. Our services include leak detection, water heater repair and installation, and kitchen and bathroom plumbing repair. Are you ready to say goodbye to water hammer and noisy pipes? Contact us today for safe and reliable plumbing services in Brighton, Colorado.
