Why Are My Pipes Making Loud Rattling Noises?

pvc pipes
It’s common for pipes to let out a thump, or clunk, every once in a while, but if your pipes shake, rattle, and roll all night long, you’ve got a problem on your hands (or shall we say, in your walls). If your rattling pipes need fixing ASAP, call Mr. Rooter Plumbing of Southeast WI today! Our five-star plumbers can offer you fast and friendly plumbing repairs.

Fortunately, noisy pipes are often a quick fix. But unfortunately, it can be hard for homeowners to diagnose exactly what’s causing their rattling pipes. Most rattling noises can be pinned down to the following three causes:

  1. A loose pipe
  2. Water pressure issues
  3. "Water hammer"

A Loose Pipe

Years of traveling water throughout your home can easily knock a pipe or two out of place, causing them to hit your wall when you run the water. To determine if this is the problem, all you have to do is look at a few exposed pipes while running water. If you see them shaking a lot, you’ve identified the problem!

  • Fixing the problem: Fixing physically rattling pipes is often as easy as securing the pipe to its wood framing with the help of pipe clips.

Water Pressure Problems

Just like a loose pipe will cause it to shake and bang against other pipes or your wall, high water pressure can also cause pipes to rattle. The main difference though is that loose pipes will shake much more vigorously than pipes that carry highly pressurized water. Another way to determine if water pressure is causing your problem is to test your water pressure. Most plumbers suggest keeping it between 40 and 60 pounds per square inch (PSI).

  • Fixing the problem: If your water pressure test gauge reveals numbers significantly higher than 60, it’s likely that’s the cause of your noise problem.

“Water Hammer”

Many homes experience a specific banging or rattling noise called a “water hammer.” A water hammer is caused by fast-closing valves, which cause water to stop or change directions suddenly. You can think of it as a door slamming shut. When a toilet or faucet valve closes quickly it can sound like a hammer hitting your pipes.

  • Fixing the problem: Because adding a water hammer arrestor to your valves (which stops them from slamming closed) often requires you to cut and solder pipes, it’s best to leave this job to the professionals!

If these don't fix your noise issue, give our Milwaukee plumbing repair experts a call! From drain cleaning to leak detection, we can handle any plumbing issue or emergency. Request an estimate today!

John Donovan

About the Author: John Donovan, Mr. Rooter Plumbing of Southeast WI

John has been a trusted plumber and owner of Mr. Rooter Plumbing of Southeast WI since 2006. With over 19 years to back him, John has experience with a wide range of plumbing-related solutions and systems. He and his team specialize in pipeline restoration, utilizing minimally invasive state of the art technologies. He and his team have also demonstrated expertise in drain line diagnostics and resolving drainage issues.