wrote:
I dont know what to do with a leaking pipe. Its a soldered joint, but
theres no way to drain it, so I cant think how to unsolder it. Both
feed and tap are at least 2' upwards of the bad joint. Drilling a tiny
hole in the Cu then solder patching it, am not convinced the solder
would be strong enough.

Also the access space is tight and theres a plastic waste pipe there
too, so I wont get free play with the blow j. Oh, and a plastic bath
too.

And of course the pipe looks somewhat corroded, so cutting the tee then
rejoining with compression is likely to fail. Such joy. Any hints
apprecated! Well, those relating to pipes.

Can't quite visualise the situation - this is a joint somewhere under a
bath? Where does the offending pipe go from/to, and what is the joint
doing?

Can you cut the joint out, and replace a section, maybe involving a
pushfit repair kit:
http://www.screwfix.com/app/sfd/cat/...61773&id=14767

Presumably you're trying to avoid having to de-install lots of stuff
like bathtubs, or you could simply replace as much pipework as necessary
- however, if the existing pipework is corroded as you say, isn't that
saying there are more leaks in the offing, and it wants sorting properly
and pronto?

David