On Tue, 15 Nov 2005 20:33:31 +0000 someone who may be Owain
wrote this:-

Also, could you go straight up the wall, through the first floor, and up
through the roof? This would enable you to have a straight, wide, duct,
which woudl be be better even though it would be longer.

It would need a condensation trap. Otherwise an expensive blue flash
and bang is possible.


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54