One of the (half inch?) copper pipes that connects to the hot water radiator in my bathroom has a VERY SLIGHTLY leaking join, probably creating one drip of water every two hours or so (I'm thankful it's such a small amount!).
On looking at it closely it must have been like that for some time as there is patchy blue surface corrosion below the join, I've just never noticed it before (never looked either).
Short of calling out the plumber to repair it, is there anything I can do? Perhaps there is something that I can put on the join to seal it?
I don't have any plumbing skills, but am okay at fixing things.
Thanks