Bathroom sink overflow causing leak underneath when plug in
Drainage and wastage systems and plumbing help, advice and answers

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mrobbo
Labourer
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Joined: Fri Jul 10, 2015 9:17 pm

Bathroom sink overflow causing leak underneath when plug in

by mrobbo » Fri Jul 10, 2015 9:27 pm

Hi all :)

I have an issue with the bathroom sink.

When the tap is running with sink unplugged - no issue.

When the tap is running with the plug in, and therefore the water escapes through the overflow, the very bottom of the sink casting gets wetter and wetter, then forms a rapid drip.

What is causing this to happen please? I'm just wondering if it's time for a new sink or if it's fixable - a blockage somewhere maybe?

You can probably tell I'm not a plumber :)

Thanks.

Mad110
Apprentice
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Posts: 19
Joined: Wed Nov 26, 2014 9:20 pm

Re: Bathroom sink overflow causing leak underneath when plug in

by Mad110 » Wed Jul 22, 2015 9:45 pm

There may be a casting hole not sealed up or the basin waste may need removing and refitting with a bit of plumbers mate putty on the gasket before tightening.

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