Constant filling of attic tank

childsplay

I will try my best to explain the issue as clearly as l can. The water tank in the attic seems to be filling itself, stopping and filling itself repeatedly. The noise is driving me mad, particularly at night when the house is quiet.

Mellor

The attic tank is designed to fill itself, otherwise it would get empty pretty quickly. When it has filled itself, it shouldn't need any more water until water is used (or else it would overflow).

So if it's running constantly on and off. It means that water is being drained constantly. First assumption would be you have a leak.

childsplay

Thank you. What should l do next?

RockOrBog

There should be an overflow from the tank, probably the 2nd highest pipe in the tank. I'd check that. Could be a faulty ballcock.

Disclaimer I'm not a plumber

childsplay

If its a leak, what's my next move?

RockOrBog

Call a plumber

phelixoflaherty

Check toilet cisterns.

childsplay

Good point.

childsplay

No running there.

Trigger Happy

Your best bet is to call a plumber.

If there is no water coming out of the taps in the house, the toilet, the overflow pipe to the outside of the house and the radiators then you need a plumber. to help diagnose. And if there is then you still need a plumber to fix the problem unless you are very comfortable doing plumbing yourself.

jasonb

We had this issue, and also saw water coming out of the overflow pipe which comes out from under the rood into our back garden. When we checked the water tank in the attic I could see that the ball cock and valve weren't working correctly, which meant the tank was constantly filling and hence there was water coming out of the overflow pipe.

I got a new valve in a builders' providers and replaced it myself. It was relatively easy to do, especially after watching a couple of good You Tube videos. But if you're not certain what the issue is, or even if you are but aren't comfortable fixing it yourself, then definitely contact a plumber.

10-10-20

https://www.boards.ie/discussion/comment/121737669#Comment_121737669

Put a small amount of food colouring into the toilet cisterns and don't flush for an hour or two. That's the best way as some leaks can't be seen against the back of the toilet porcelain.

Boardnashea

First are the washing machine or dishwasher running? Then check the toilets, taps and showers and if there is no flow from those, go to the attic and check the tank. If ballcock needs fixing or replacing it's not a big job.

childsplay

No water from over flow. Thinking time for plumber for a diagnoses.

childsplay

Brilliant idea!

MoodeRator

Had this issue a few years ago. For me it was a slow trickle from the toilet cistern. It was barely noticeable on first inspection, but at a closer look I could see a slow trickle at back of toilet bowl.

coylemj

I'm not a plumber but if the OP can hear the tank toppping up then it's hardly a fault with the ballcock - that appears to be working as intended. Something that should be off or idle is drawing water, that's why the tank needs topping up.

jackofalltrades

I've a family member who had this problem several times.

Every time it was a faulty toilet flush valve slowly leaking water into the bowl.