Overflow leak from header tank?

I've just had the same problem fixed. Don't bother changing washers etc just change the ballcock. It will save you alot of messing about.

Caroline
March 2008

You can simply change the washer if you want - but often the valve will be crudded up with limescale and there are several different types....I usually pop a new complete valve in - either a plastic type or brass. If you replace like for like the chances are you won't need to alter any pipework.

John
March 2008