Can anyone recommend any good UV protected conduit for running network cable externally?

[Beefy]

Can anyone recommend any good UV protected conduit for runnign network cable externally?
I plan on running around 10 cables (7mm diameter each) from the loft to the 2nd floor and ground floor, but the cables are orange and i'd like to hide them in some pvc black conduit. A lot of the stuff i've seen online isn't UV protected or even attempts to stop water from entering.

Has anyone got any good experience or brands/products they can suggest to get the job done. The cable is obviously low voltage and is rated for external use (Cat7 external)

 

[SJD]

I take it there is no accessible void between the loft and the floor below, e.g. for a soil pipe, water pipes, etc?

 

[westward10]

See following link for thread of the same theme. This thread closed.

Cavity wall access from Loft to 2nd floor for low voltage cable.

Hi guys, I know this is technially not a mains electrical question as it's regarding network cable (CAT7) rated for inwall installation. But my question follows the same theory. I'm looking at dropping a few network cables from the gable end of my wall in the loft down into a room on the 2nd...

www.electriciansforums.net