Vessel Sink drain problem

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by single_digit, Jul 17, 2012.

  1. single_digit

    single_digit New Member

    Messages:
    18
    Location:
    Louisville, KY
    I have a vessel sink with an overflow drain near the top. I have a drain assembly that has a cut out opening to the hole in the side of the sink's base to allow the overflow to run in to it. However, I am a bit confused as to how to properly seal this system up. The design of this drain assembly allows water to go between it and the sink to get under the sink. I have started noticing efflorescence on my marble, presumably because water is leaking down and pooling between the sink and the marble. What is the best solution here? It seems like a poor design and I'm assuming that plumber's putty alone can't fix it? I'm thinking about buying a drain assembly that doesn't have a hole for the overflow to tie in to, but that isn't really ideal either.
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,247
    Location:
    Cave Creek, Arizona
    Either you are not describing the sink properly, or you have installed the drain wrong, because there should not be any way for "overflow" water to escape and cause a leak. Plumber's putty is NOT a "cure all".
  3. mikeplummer

    mikeplummer Plumber

    Messages:
    190
    Location:
    Ontario, Canada
    i think a picture would help describe what you have...
  4. single_digit

    single_digit New Member

    Messages:
    18
    Location:
    Louisville, KY
    Here is a shot of what I believe to be the problem area. You can see the cutout in the drain assembly that allows the overflow to enter the drain. I believe water is going between the metal and porcelain at this point any time water enters the drain. The pop up assembly has been taken out for this photo. Thoughts?

    Attached Files:

  5. single_digit

    single_digit New Member

    Messages:
    18
    Location:
    Louisville, KY
    So, no input? I'm at a bit of a loss on things...
  6. Winslow

    Winslow Plumber

    Messages:
    450
    Location:
    Hawaii
    there is supposed to be a rubber washer that installs between the sink and the locknut of the drain to seal it.
  7. single_digit

    single_digit New Member

    Messages:
    18
    Location:
    Louisville, KY
    Thanks for the info! I guess the only way to know if that is there (let alone functioning properly, is to pull the sink off of the countertop). :(
    That would make sense though. If this is not there is it a readily replaceable part? What would it be called to a plumbing supply place?
  8. Winslow

    Winslow Plumber

    Messages:
    450
    Location:
    Hawaii
    I was trying to give you a link that showed a picture of the part but this site won't let me link it. Anyway the part should be readily available at any supply house. If you don't have one nearby then Lowes or Home Depot should carry it. Good luck.
    Last edited: Jul 22, 2012
  9. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,247
    Location:
    Cave Creek, Arizona
    Water in the overflow openings or in the sink will NOT leak under the sink, unless the rubber washer is installed improperly. sometimes, when the sink is on top of the countertop, the installer may use the drain to hold the sink in place and this does NOT work with a sink which has an overflow.
    Last edited: Jul 23, 2012
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