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Water coming from "disused" overflow

Posted: Tue Jan 25, 2022 7:39 am
by HellsBells64
Hello,
Just had a new bathroom fitted, and since the new suite installed there has been a lot of water coming out of the external overflow. I paid the bathroom fitter cash on completion and, despite an initial promise to "come out and look" he hasn't turned up and is now not responding to calls or texts. Fitter stated that the overflow is the 'old toilet overflow and isn't used anymore' however that doesn't ring true (although I know next to nothing about plumbing).
Observation/experimentation shows that water comes out of the overflow when the toilet has been flushed, and when any other water is drawn either in the bathroom or kitchen, not just when draining/emptying sink etc.
I am in an upstairs maisonette which has a gravity fed system including small hot water tank. I haven't actually moved in yet so goodness knows how much water will come out once I start using the bath and shower. The walkway underneath the overflow is puddling with water, and it is dripping down in front of the property beneath and collecting in a large pool. It more or less dries up overnight (as no water is being used) but becoming a big problem during the day.
Can anyone advise as to what the cause might be please? I expect I will need to call out a professional plumber, but just want some indication of how simple/complicated it will be to sort out.
Thank you in anticipation.

Re: Water coming from "disused" overflow

Posted: Fri Jan 28, 2022 10:31 pm
by stoneyboy
Hi hellsbells64,
What you are describing is impossible. It may be that the toilet overflow is still connected and the water level in the toilet cistern close to the overflow level.
Have a look in the cistern at the water level.
Regards S

Re: Water coming from "disused" overflow

Posted: Sat Jan 29, 2022 5:25 pm
by HellsBells64
Thanks Stonyboy,
I got someone to have a look and it was actually the hot water tank that was causing the problem: the ballcock was taking in water and preventing the water supply being switched off. A new ballcock has sorted it. Clearly my bathroom fitter didn't know what he was talking about, but also nothing to do with the new toilet - pure coincidence.
Thanks again. HB

Re: Water coming from "disused" overflow

Posted: Sat Jan 29, 2022 10:08 pm
by stoneyboy
Hi hellsbells64,
Thanks for letting us know the outcome.
Regards S