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  1. #1
    Join Date
    Jan 2014
    Posts
    1

    Default Water dripping behind walls

    I can hear water dripping behind the wall in my bathroom. I checked to see if there is in water coming into the house or discoloration of walls or baseboards but there is none of this. I shut off the water valves to the toilet and sink in my bathroom but the sound has not gone away. What could be the problem? How concerned should I be? By the way, the temperature here is 22 degrees.

  2. #2
    Join Date
    Dec 2010
    Location
    Houston Texas
    Posts
    2,969

    Default Re: Water dripping behind walls

    You could have frozen water slowly defrosting inside the walls,

    You could have a broken pipe slowly leaking as the pressure fades (that can take hours)

    You could have a vent pipe allowing the sound to travel further and no problem at all.

  3. #3
    Join Date
    Jan 2008
    Posts
    2,203

    Default Re: Water dripping behind walls

    By now this may be of little help, but....

    Many times a pipe which has frozen and burst is discovered only when it thaws and flows again (and that's usually going to happen in a spectacular way). Usually if you still have full water flow during the freeze, you're OK. If you're concerned about this, don't turn the supply valves off- rather turn them on and open the affected faucets for awhile. That will allow you to check for full flow, allow smaller ice particles to be flushed out, and allow the near-by hot water piping to warm up hopefully transferring some heat to the near-by cold water lines.

    If you don't see full flow as normal but a weak trickle instead, and full flow doesn't return after leaving the faucet on for a couple minutes then cut the supply off to the affected pipes before the fixture and drain them (or at least try to). And prepare for some plumbing work when things thaw.

    Phil

  4. #4
    Join Date
    Aug 2007
    Posts
    7,235

    Default Re: Water dripping behind walls

    Another option, which isn't destructive at all, could be that the pipe is rubbing on framing as it expands and contracts with heat changes. Run hot water through a cold pipe and you're gonna get a clicking/dripping sound if it's in contact with anything.
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

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