The plumbing in your walls is extremely important and needs to be reliable, but it should be so quiet you don’t even remember that it’s there. However, sometimes plumbing can decide to make its presence known, and does so with a thumping or rattling noise that’s both annoying and worrisome. To help you better understand what’s going on, here are three reasons this rattling noise can happen.

Water Hammer

This banging or rattling noise is often referred to as “water hammer”, and it’s caused by a blocked vent pipe in your plumbing. Water moving through your pipes can create a vacuum, which is normally dispelled by a vent that pokes out through the roof near your faucet or plumbing fixture. However, when the vent is clogged, a vacuum can form, and this vacuum can create the hammering noise.

There’s a fairly easy way you can try to fix this:

  • Shut off your main water supply.
  • Turn on the highest faucet in your house (one that’s the farthest upstairs and furthest away from your main water supply).
  • Turn on the lowest faucet in the house (one in the basement, outside, or located on the first floor closest to your main sewer line).
  • Eventually the water will drain out and stop flowing, allowing air into your pipes. Turn off the low faucet, turn on your main valve, and allow water to re-fill your plumbing until it’s freely flowing through your high faucet again.

High Pressure

High water pressure is also a cause of loud banging and rattling noises in your pipes. If you’re noticing this noise when turning a faucet on or off, this is probably your issue. You should contact a Covina plumbing expert and ask about installing a pressure regulator or reduction valve, which can allow water to flow through your home at a more reasonable speed, which is also much easier on your plumbing and your water-supplied appliances.

Loose Mounts

Vibration or rattling sounds could be a symptom of a loose fitting or mount somewhere in your lines. Inspect all of the pipes in your home, including their fittings like corners and T-joints for any loose fittings. Not only could these be the source of the rattling, but they could also be the cause of a leak that’s doing water damage in your walls.

If you’re experiencing a thumping or rattling in your plumbing, you shouldn’t ignore it! Call Andrews Plumbing to request an inspection or service appointment!

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