My question is:

Is there any code specifying whether a gas line breaches fire-rated frame wall between house and attached garage? Obviously I need to drill a 7/8″ hole for 1/2″ BI pipe to pass thru the rim joist and 5/8″ drywall where I need to bring it from basement into garage about 1′ above the garage floor slab.

Full basement, house supplied with 1″ BI pipe after company’s meter. Attached garage at house’s opposite end from meter. I hung a garage heater last year in garage after insulating/drywalling it a few years ago, ran it last winter off 20# propane bottle outside via 1/2″ BI pipe. Prior to connecting propane I pressure-tested piping to 120# for 24 hrs w/no loss.

Local gas company guys I’ve talked with say it’s fine to extend 1/2″ BI pipe from T at furnace to garage heater, offered to use their sniffer to check for leaks before I open shut-off where this line starts at T by furnace.

From there it’ll run vertically up the wall behind a vertical 3″ PVC S&D suction pipe installed for Radon abatement before we bought this place five years ago.

There’ll be a 2nd shut-off at this point in the extended line, just after it enters garage space. (I had it high on the pipe carrying propane, run across ceiling. Another outside where line from regulator attached to BI.) Down lower it’s more accessible in the event I want to shut off supply to the heater, backed up by that first valve where this extended line will begin at T by furnace some 35′ distant.

And I’ve checked into whether 1/2″ BI is adequate for the 50,000k BTU heater already for this distance, totaling about 50′. Charts say OK.

State I’m in permits this for property owners while I can’t do it for others. I’ve done gas piping for myself before for some years but in this case the attached garage presents a slightly different scenario from an insurance standpoint.