"RicodJour" wrote in message
...
On Oct 11, 9:07 pm, "benick" wrote:

I can tell you right now T&G will be more costly than drywall ..The
ceiling
of the garage however , will NEED to be 5/8 Type X drywall as it has a
room
over it.....Same goes for the wall between the house and garage if
attached...You can put your T&G over the drywall on the fire wall AFTER it
has been fire taped but I'd finish tape the ceiling.......

Code doesn't require 5/8" Firecode ceiling in a detached garage with
an attic over it. Code only kicks in with the ceiling rating if there
is a habitable room up there.

From the IRC:
HABITABLE SPACE. A space in a building for living, sleeping, eating or
cooking. Bathrooms, toilet rooms, closets, halls, storage or utility
spaces and similar areas are not considered habitable spaces.

If there's no heating/plumbing/windows in the attic, it's not a
habitable room as far as the code requirement.

R

I was under the impression you were finishing the attic , if not 1/2 inch is
fine.....You described the attic as a walk in with a window and I thought
you were putting in a bathroom up there as you asked about MR sheetrock in a
bathroom...How does one walk or store stuff in the attic with no floor ???
LOL....