On Mon, 24 May 2004 13:26:27 +0100, a particular chimpanzee named
"Terry D" randomly hit the keyboard
and produced:

I've noticed that a lot of new houses have the old style outside soil drain
stacks, usually in black. They look horrible. Has anyone an explanation
for this? I thought that inside soil drains were adopted 30-35 years ago.

External: Pros- can be accessed easily; any leaks are immediately
evident. Cons - aesthetics.

Internal: Pros- unobtrusive. Cons- any leaks, or access for
rodding may require removal of the plasterboard; noise.
--
Hugo Nebula
"The fact that no-one on the internet wants a piece of this
shows you just how far you've strayed from the pack".