Re: Lavatory basin drain leak
Posted by Leo on April 18, 2002 at 10:39:22:
In response to Re: Lavatory basin drain leak
: : I installed a new lavatory pop-up drain in our bathroom sink and it leaks around the area that contacts the vitreous china bowl as well as around the threads on the tail-piece. I installed plumbers putty generously under the chrome besel ring (the part visible looking down into the bowl)and applied plumbers grease on the rubber washer that tightens from below in order to facilitate a good fit.

: : When I fill the basin and open the pop-up plunger, the water runs freely and I can not see any leaks. However, if I return in five minutes, I can see traces of water around the rubber washer, the flange nut and on the flange nut threads.

: : I have tightened the flange nut as tightly as I feel is prudent because I do not want to crack the china bowl.

: : I am about ready to remove and reinstall after gooping everything with silicon sealer as a last resort. I would appreciate anyone having had a similar problem sharing their "fix" with me. Silicon sealer seems like a sledge-hammer approach to a problem that requires finesse.

: Our company does an average of 200 finishes a month,meaning roughly 600 pop-ups and with the problems we've had with we've resorted to siliconing around the gasket and nut. One we have with the china basins is the drain tapers so much that the pop-up flange doesn't sit fully on the sink,making less area for the putty to seal.When you re-putty the drain hold it as still as possible when tightening it to make the best seal.

Thank you for your experienced reply. As a meticulous craftsman, this has been driving me to distraction. I am happy to learn it is not my workmanship but an inherent defect in the basin's contour that is causing my problem. I will do as you suggest.

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