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Question:

How do I add an overflow outlet to a bathroom sink?

I recently renovated my upstairs bathroom and used a vanity top with a pre-attached undermount sink. The sink didnt have an overflow hole, but I didnt think that I would have a problem until my girlfriend left the water running with the drain closed!What I want to know is if it would be practical to do something like drill a hole in the sink and somehow add an outlet that would connect to the drain. Does this even make sense, or should I try something else? Any help would be appreciated.

Answer:

I don't think there is a product available and suggest you phone the Plumbing warehouse to see if there is a fitting available. The alternative is to replace it, but that could be expensive.
buy a new sink with an overflow----specially if your girl is a keeper
what is overflow in bathroom sink
Not much can be done. Just buy a new sink with an overflow. Could try attaching a float to the plug? Just a laugh.
No - you would have to replace the sink altogether. However I would like to point out that a bathroom sink with an overflow makes for an area that you can't clean. It's an outer bowl (the one you see) and another bowl underneath that overflow is directed into (the in-between space). It will get moldy, and it can be difficult to deal with. I would recommend that you mention it to visitors & live with it the way it is.

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