I got some conduit I want to run between stories to replace the only other path I've found which it very long.



This coax takes the path I'd like to use. It comes out from the flashing next to an unused chimney and goes up into an overhang in the attic which is dead air. The top side I'm fairly ok with. Maybe just a junction box - I'd prefer if you could get a top bottom mount one i.e. Cable arrives at the top and feeds out the bottom.

But the under the flashing but I'm not happy about. Not too keen to replication that. The roofing tiles are concrete. What options are there?

Actually lookin at that picture I took that small piece of vertical pipe was an overflow/over pressure pipe from a hot water cyclinder that was in the cupboard I use (where the wires will originate from) - I need to check but I'm sure that passes right through the Roof. What options might that give me if it's open in the cupboard.

And lastly how should I run the conduit? In a straight line? Or attached to the chimney or back wall up into the attic?