Most garages have a ceiling secured to the bottom chord of the roof trusses or rafters and that has to be 1 2 drywall also.
Garage door to living space fire requirements.
So for all these reasons the international residential code irc and residential edition of the florida building code fbc r302 5 have safety standards for a door that separates the garage from the house interior.
Let s take them one at a time.
A door with a 20 minute fire rating.
The best term for this required separation is a fire separation wall.
To increase level of life safety within a home look into sprinkler systems.
A solid wood door not less than 1 3 8 inches thick a solid or honeycomb core steel doors not less than 1 3 8 inches thick or a 20 minute fire rated door with a self closing device.
R302 6 dwelling garage fire separation.
Attached garages must have a firewall separating the.
The material filling this annular space shall not be required to meet the astm e 136 requirements.
Doors separating the garage and living spaces shall be 1 3 8 solid wood solid or honeycomb core steel doors not less than 1 3 8 thick or 20 minute rated doors.
To meet fire separation requirements the door must be one of three types of doors.
The door cannot open directly onto a room used for sleeping purposes bedroom and must be one of the following types.
There are requirements for the walls and ceiling door to the house hvac ducts and any other garage house penetrations.
Openings from a private garage directly into a room used for sleeping purposes shall not be permitted.
Walls and ceiling the wall between an attached garage and the house living area is required to be minimum 1 2 drywall.
R302 11 fireblocking item 4.
Tuesday december 4 2018.
Other openings between the garage and the residence shall be equipped with solid wood doors not less than 1 3 8 35 mm in thickness solid or honeycomb core steel doors not less than 1 3 8 35 mm thick or 20 minute fire rated doors.
The wall between a house and garage must be separated by 1 2 drywall.
Solid wood door not less than 1 3 8 thick.
Because houses don t have firewalls it is recommended at minimum to use solid wood doors not less than 1 3 8 35 mm in thickness solid or honeycomb core steel doors not less than 1 3 8 35 mm thick or 20 minute fire rated doors.
In short the garage needs to be separated from the house in case of fire but this isn t a fire rated assembly nor is it a firewall.
This also applies to structural members and this extends to the attic in a.