"iamaran" wrote in message
. 1.4...
Apparently (I was not in, my partner was) it had been connected, but due
to
some poor welding in the original copper pipes along with a blockage, the
plumbing from the sink has become separated.

I have a couple of questions if that's okay:

1. Is that explanation likely to be accurate?

I wouldn't normally dip into a thread that others could answer far better
than me. But it sounds like complete bs to me. Waste pipes are made
from upvc, not copper.

Ben