This is a friends house and I was looking because that what I do.
I told him the walls obviously need drywall but his furnance is pushed up against the wall can he drywall to the furnance and be ok?
Does the ledger on the fire wall have to be rocked also, or can rock go to top and bottom and be caulked?
The main duct above the furnace is rigid pipe with insulation on it does the pipe need something else on it to make it fire resistant?
Then there is the dryer duct I assume it can vent into nonliving unfinished garage, but does the flex pipe approved for that application?
I think these are all good questions.I always try to find the answers first,but sometimes Experience is needed.