I would like to add a hose bib for my backyard, but I don't know if there are code issues that would prevent this. I have hose access already, but it's on the other side of my house. I'm installing drip irrigation, and if I use that hookup, I would have to cross doorways with the tubing.

My water lines are accessible in my laundry room. Through the ceiling, I can access my garage attic, which then leads to the exterior wall. My current lines are copper, but my plan is to run PEX. I was thinking about using an Aquor hydrant on the exterior wall, since they're so low profile. My concern is about whether the PEX is permitted in an attic, especially being in New Jersey. I obviously would drain this during the winter months, but I don't know if that's sufficient for code purposes. My thought was to install a shutoff in the laundry room with a bleed valve. I could also open the valve on the exterior. I just wanted to see if this would be feasible or if it's something that's not worth pursuing.