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Leak from back of countertop sink

Have notice a leak from the back of a countertop Ronbow 200032 sink in our master bath. The sink is mounted on top of the bathroom countertop, and the faucet is mounted about one inch behind the sink. The leak is definitely coming from exactly where the back of the sink meets the countertop, not the faucet, and the sealant/caulk there is definitely come loose. If one looked staight down at the sink from above, O is the facucet and x is where the water comes from and D is the drain. O ________x_________ | | | D | |-------------------------------| If one looked at the sink from a back profile, the water comes from under the bottom of the sink, right under the the L in the following diagram: __________________ | | |________L________ | I see no evidence of water anywhere in the cabinetry under the countertop. I was tempted to just reseal around the leak, but then I might just be sealing in the problem. There must be a leak somewhere that is allowing water to get under the sink itself. Any thoughts?

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  • quatroch
    quatroch Feb 07, 2012

    Ugh, sorry, my diagrams did not come out at all.

  • yadayada
    yadayada Feb 07, 2012

    I suggest you seek the help of a contractor.

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6 Suggested Answers

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kachbibi1
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SOURCE: bathroom sink

You won't for long. There is some stuff on the market that can immulate porcelain, but it won't hold for long. It really won't look the same. Now, if you are looking for practicality, and it doesn't leak, then keep it, otherwise, get a new one and you will be pleased with what is on the market now and the selections.

Posted on Feb 03, 2009

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SOURCE: Pegasus Push Button Vessel Sink Drain with overflow

Put plumbers putty around the flange that will be in contact with the sink. When you put it into the hole, try to line up the overflow as good as possible. The nut that goes onto the bottom (tailpiece) has a rubber gasket that will go between the nut & the sink. Adding some plumbers putty here won't hurt. After all is secure, just remove the putty that squeezed out from tightening.

Posted on Feb 21, 2009

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SOURCE: Leaking kohler faucet

Where the spout pivots on the main body, there are a couple of washers, you can replace these washers pretty easily by removing the handle and then the "cover" from the unit. The water has to be shut off before you do this. I would take this oppurtunity to replace all the washers.

Posted on Mar 19, 2009

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There should be an o-ring on the mating surfaces of the hose and the faucet that my be missing.  It could also me that the big washer in side of the faucet (under the cartridge) has been shifted.  
I doubt it is the cartridge itself, always try the cheap ideas first.

Posted on Apr 14, 2009

gary1121
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SOURCE: Vessel sink drain causes poolin of water.

YOU ALSO HAVE A VENT ISSUE, THE VESSEL SINK DOESN'T HAVE THE LITTLE HOLE IN IT LIKE A VANITY SINK, THERE FOR THE WATER IS GOING DOWN THE DRAIN BUT THE AIR CAN NOT COME OUT, YOU NEED TO INSTALL A STUDOR VENT OR AN INLINE VENT INTO THE DRAIN BETWEEN THE WALL AND THE TRAP CUT IN A TEE AND BRING A PIPE UP TO THE BOTTOM OF THE COUNTER TOP AND INSTALL THE VENT, USALLY HAVE TO PUT A FEMALE ADPT ON THE TOP OF THE PIPE THE VENT COMES WITH THREADS DO NOT GLUE IT IN PLACE, THEY HAVE A RUBBER FLAPPER THAT OPENS WHEN THE WATER IS GOING THRU THE DRAIN AND ALLOWS IT TO PULL IN AIR THEN THE FLAP CLOSES WHEN NO WATER IS RUNNING TO KEEP THE SEWER SMELL OUT

Posted on May 29, 2009

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