A 1-story, flat-roof house (no basement) in California is going to be re-covered, so it's a prime time to do some electrical upgrades.
The local building inspector says that romex cable run on the roof (before foam insulation is put on) must be covered by sheet metal stapled over it to protect from nail incursion (yes, he knows this is a *foam* roof, no shingles, etc., but no matter).
I've asked electrical supply wholesalers about this but they have no product such as this.
Is this something an electrical supplier would have? Or is just a roll of sheet metal stock what's called for?
Thanks.