Rumbling Pipes When Water NOT In Use - Plumbing - DIY Home Improvement | DIYChatroom

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing


Thread Tools Display Modes
Old 10-19-2012, 09:22 AM   #1
Join Date: Oct 2012
Posts: 2
Rewards Points: 10

Rumbling Pipes When Water NOT In Use

The rumbling happens sporadically throughout the day, maybe 2-3 times a day and lasts 5-10 seconds. Sometimes it sounds like it's coming from the back bathroom, sometimes the front bathroom, but never from the kitchen OR water heater. The water heater was replaced in 6/2011 and has an expansion tank. Not sure exactly when it started, maybe 3-6 months ago? Plumber checked the water pressure and it was O.K., and didn't have any other culprit Any ideas about why it's happening??


nansuedar is offline   Reply With Quote
Old 10-19-2012, 09:49 AM   #2
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 7,833
Rewards Points: 3,772

When someone uses hot water, the hot water pipe expands, lengthwise also. (When someone uses cold water, the cold water pipe contracts.) Later the pipe returns to room temperature. Some of the holes in the joists or studs through which the pipe passes may be a tight fit and the wood deforms slightly as the pipe elongates or shortens. Exactly when the pipe slides slightly in the hole to relieve the stress is random and sudden and the jolt can be transmitted to other, looser, pipes that can rattle.


States can help recovery from hurricanes and tornadoes by not requiring due digence or prompt and timely correction of substandard conditions, and by providing continued liability insurance where companies drop homeowners.
AllanJ is offline   Reply With Quote
Old 10-19-2012, 10:24 AM   #3
Join Date: Oct 2012
Posts: 2
Rewards Points: 10

Rumblig Pipes

Thanks for the quick reply!

So, what should/can be done about it?
nansuedar is offline   Reply With Quote
Old 10-19-2012, 02:03 PM   #4
Join Date: Oct 2011
Location: PA
Posts: 5,918
Rewards Points: 582

could be a ball cock in one of the toilets running slowly causing a hammer...this could be from a leaking flapper.....try shutting off water to one toilet at a time see if it stops....ben sr
ben's plumbing is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Installation and support of water heater expansion tanks. Homerepairguy Plumbing 46 01-28-2013 05:55 AM
Bonding water pipes WillK Electrical 14 06-14-2011 06:14 AM
My hot water recirculation system is a disaster Michael Neill Plumbing 9 11-05-2010 11:31 AM
Cold water is warm - hot water leak under slab? Homerepairguy Plumbing 9 10-13-2010 08:17 PM
Installation of new pipes on Water main... NJE Plumbing 3 02-05-2007 12:06 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1