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Thread: How to seal an overflow hole in a sink drain?

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  1. #1

    Default How to seal an overflow hole in a sink drain?

    Hi All,
    I just purchased a faucet that came with a drain with an overflow. My vessel sink does not have an overflow, all it has is a hole in the bottom to insert the drain. I was told that I could cover the hole in the drain using pvc pipe cut to size and add another washer. I was told this was a called making an "overflow kit" and that plumbers do it all the time. Could anyone provide me with some expert advice on how to go about this?

    Returning the sink is not an option, and I really do not want to purchase a new drain without an overflow.

    Thanks in advance for any help, Mary

  2. #2
    Plumber jimbo's Avatar
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    On most drain w/overflow that I have seen, I see no way to connect that to a vessel lav and not leak. If the sink base is thick enough, I guess it would'd matter.

    Sounds like an expensive lav. I would not even consider Rube Golberging the drain. Spend $15 to $40 and get a proper drain.

  3. #3

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    I suspect she bought a, hard-to-match, faucet and drain without thinking ahead. BTW, if that's the case, clean them up and return them for a set without an overflow.

  4. #4

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    The reason I bought this faucet with this drain was because it was one of the few drains that had a 2.5" drain flange that would work in the 50 mm drain opening in the sink, as well as a faucet that would work with this sink. The overflow hole was not mentioned in the specs nor visible in the drawing, but if I were a pro at this I probably would have assumed it existed.

    I have considered returning the faucet and drain, but the restocking fee is more than the cost of a new drain. I can buy a new drain with the properly sized flange and that is my fall back plan, but that solution is also less than optimal for a variety of reasons.

    The gentleman who told me that the plumbers he uses frequently have to build an "overflow kit" sells high end sinks and drains. He gave me very brief instructions and was incredibley nice and clear. Unfortunately, after I hung up I realized that I had more questions and that I could use some more details. Since he is not in the business of giving advice and I have not purchased anything from him, I feel it would be inappropriate to call him back and ask for more detailed instructions. I thought perhaps someone here could help me.

    Thanks again, Mary

  5. #5
    Plumber jimbo's Avatar
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    We are somewhat in the dark here. If you could post some pictures of the sink and the drain, we might have some ideas.

  6. #6

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    I wish I had the tools and skills to post a picture, I'm sure it would become much clearer, but I don't have either. I think I will have to do it the old fashioned way and actually visit and talk to a live human being. Thanks for being so willing to help. Mary

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