I'll try the hammering trick, but I'd imagine to works for leaks between slats: mine is due to a fractured slat I think.
Originally Posted by bikegeek
What about brewer's pitch?
As I understand, brewer's pitch is used to line the whole inside of the barrel. I could do that... but am keen to keep the oak raw, for flavor etc. Unless I can apply it locally to the area that's leaking. Don't know if that is possible though..?