Seperation between garage and sleeping above

[Don Rataj]

The building code requires that the garage be seperated by 1 hour seperation from sleeping area above.
Is there any specific requirement reagrding the amount a air flow (gas fumes) that can penatrate that 1 hour seperation.
What amount of holes or gaps are allowed and/or is the 1 hour a complete air tight seperation?
Thanks for your help.

[Rick Hurst]

All of the openings at the ceiling drywall of the garage should be sealed.

Is there an acceptable level of gas fumes allowed for penetration. NO

[Brandon Whitmore]

I agree with Rick,


super heated gases from the fire can spread through a tiny gap and need to be repaired.