Supporting EMT to a metal shed and roof

[ptonsparky]

Roof is just corrugated sheet metal and nothing more

Is that a shipping container?

 

[hillbilly1]

What is the roof secured to? Wood members? Metal framing? Could your box or conduits be supported by those? If not, could you run of piece of 7/8" strut between them to secure your boxes and conduit? I agree that the screws are listed to be installed from the exterior of the roofing.

Yeah, looks like a shipping container, piece of strut wall to wall fastened at the ends to the wall. That would give support to the fixture and conduit without compromising the roof.

 

[rambojoe]

Let me tell you something about bosses...
If you didnt do (and please never again) run a pipe diagonally and at least put some uv sillycone on the screws uptop, he might of been peeved but let it slide. Always ask the sob what else he doesnt like- and fix it. It can be better.
So, another grow room eh?
Oops, thorry i meant bos...
Oh my goodness, please tell me that isnt a high pressure air manifold made out of pvc... Scary...now i gotta know why the tiny black air lines... Maybe not weed...