Here is the piping going in.
Not great pics I know. Water that comes out of the pipe in header tank is cold. Could it be downstairs shower?
Thanks chaps
Appreciate swift response.
No ballcock fine. I emptied the tank and noticed cold water seeping up into the tank from the poor at the bottom of the tank. I traced it to the bottom of the boiler. Obviously it eventually makes the tank overflow to the outside. So coming from the boiler.
Cheers.
Hi all. I know this is a well visited topic, but haven't quite found what I was looking for.
Basically header tank is leaking out of the overflow. It is water coming from the pipe at the bottom of the tank which connects to the boiler at the bottom. It isn't hot water and the heating isn't on...