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    dahoen's Avatar
    dahoen Posts: 1, Reputation: 1
    New Member
     
    #1

    Jun 15, 2010, 11:31 AM
    I just took my very seldom if never used bathroom sink drain apart because I had some
    I just took my very seldom if never used bathroom sink drain apart because I had some water that backed up into it. When I took the U-joint drain off there was a white solid (almost salt looking) blockage at the bottom of the U... what is this and how does it form? After I removed that the water drained better, but it must have hit a blockage further down... now I'm stuck... should I try Drano?

    Thanks
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
     
    #2

    Jun 15, 2010, 11:38 AM

    Hold off on the chemicals for now. Your back up is caused by a blocked drain line further down the system. This must be a main floor sink with other fixtures higher up, maybe a second floor. That U-joint is a P trap and it was filled with whatever was in the water that backup up from another fixture. Remove the P trap and rod straight into the pipe coming out of the wall. You will hity a 90 elbow a few inches in so keep twisting, I use a drum auger on an electric drill.

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