I'm currently tearing out the sheetrock and everything in my attached garage to do general repairs to other things. I quickly found that there wasn't a single bit of insulation (which explains a lot on my heat bills in the winter I'm sure) so I'm going to do that too before I re-drywall everything.
My plan is faced r-19 in the walls (with the face towards the interior) and non-faced r-30 for the ceiling between the floor joists since there's bedrooms above it.
Question is, am I assuming the correct types (R19/R30) for this project, and do I have any airflow concerns (venting) I should address from doing this?
I live in the Midwest US and we can get some pretty cold winters, the garage doors are insulated types and the place is sealed pretty decent. There's another rear entry door and a door into the home, both have decent sealing on them and I just replaced the exterior door last year, it will be used daily once completed so I can't assume any "stail air" or excess moisture would get bottled up in there for too long at a time.