Another leakt Header tank

7 Aug 2012
Reaction score
United Kingdom
HI all,
In our loft, the small tank (header??) has a constant drip. The bit where water comes in has a drip, resulting in the overflow constantly dripping. Do I need to replace the arm and ball valve to stop it? Also, where does water in there come from? The heating isn't on.
I hope this is enough info.???

If I lift the ball cock, it still drips.
Sponsored Links
it is very cheap, but quicker and less effort, to swap the old ballcock for a new one.

If you feel like it, you can repair the old one at your leisure, and put it in a plastic bag next to the tank ready to swap back next time it happens.

The new one will usually fit onto the old threaded stem that is fixed to the tank, if you undo the big nut. When you have the new one in your hand you will see what I mean.
Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local