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    Under sink leak


    I have a random leak under the sink.
    The traps have been replaced twice and we can go days without any leaks then randomly we have a bowl full of water?
    Has anyone seen this before the house has plastic piping and was built 1989?

    Asked by Simon on 27th Jul 2022
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    Best Answer

    Mark Wall

    "Could be a leaking tap connector or it could be that the overflow needs reattaching"

    Answered on 1st Aug 2022 - Member since Feb 2022 - report
    Güven Plumbers

    "This could be down to a overflow which only leaks when it reaches the overflow mark on the sink. Also look out for poor seals around the sink like silicone."

    Answered on 27th Jul 2022 - Member since Jul 2022 - report
    H2O FLOW

    "You should have no leaks under the sink of all pipes are installed correctly. As kind as all of the washers are in place correctly and the sink waste is screwed on tight then there should be no leaks from the waste pipe. It all depends how your pipes are set up. Sometimes there are standpipes under the sink for washing machines which can back up and overflow if there is a small blockage present. It’s hard to say without seeing the pipes, but I would say you have a problem unrelated to the traps."

    Answered on 27th Jul 2022 - Member since Jun 2022 - report
    C Jones Plumbing Services

    "Yes maybe it's not the traps in the first place and leaking from somewhere else need to have a good look and trace the leak"

    Answered on 27th Jul 2022 - Member since Apr 2020 - report
    Yorkshire Plumbing and Heating

    "You should make sure the trap is fully tightened, run the tap and see if it leaks. If it does, check the washers are alligned properly when you open the nut and replace them if they look worn."

    Answered on 27th Jul 2022 - Member since Jul 2022 - report
    Dean Jones

    "It may be coming from the overflow if so it would only leak when sink is full of water"

    Answered on 27th Jul 2022 - Member since Apr 2022 - report

    "check the washer on the sink siver
    Use a bit of plumber mate after you changed the washer"

    Answered on 4th Aug 2022 - Member since Jul 2022 - report
    Arc Electrical Cumbria

    "More likely to be the sink plug not sealed in properly, water running down outside of pipe work makes it look like the trap is leaking, some plumbers/handyman/kitchen fitters use silicone sealant to put them in with, I used to until I had a similar problem, plumbers putty fixed it, brilliant stuff. Roll it into a cigar shape, put it into the sink, tighten nut up underneath for a fantastic seal, really good plumber I follow on you tube shows you how to do it"

    Answered on 28th Jul 2022 - Member since Aug 2017 - report
    Jamie Parsons

    "It could be the actual waste on the sink, strip it all down and sealed back up"

    Answered on 4th Aug 2022 - Member since Oct 2020 - report
    Self employed

    "When you say "bowl of water " is that a bowl placed under the sink .
    Is it a kitchen sink in a unit like a fitted kitchen .
    Do you have any photos please .
    Condensation will form on copper pipes easier than plastic pipes and it can run down the pipes .
    Put toilet paper tightly wrapped around the pipes and use kitchen roll on all the surfaces underneath to pin point where this water is coming from .
    If its random then it can be possibly a simple problem ."

    Answered on 4th Aug 2022 - Member since Oct 2021 - report

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