Inch gypsum board for use in garage wall and ceiling separations.
Fire rated material for garage ceiling.
Ducts in the garage and ducts penetrating the walls or ceilings separating the dwelling from the garage shall be constructed of a minimum no.
Fire hazard properties on the other hand refer to a material s properties such as how easily it burns.
Dryer exhaust ducts that penetrate garage walls are serious fire hazards.
Again this is not a fire rated assembly but merely what is required to meet the proper fire separation requirements.
By glenda taylor in most communities building codes require the construction of a fire rated barrier between the garage and any living space.
If there is living space above the garage the ceiling would have to be 5 8 type x drywall or equivalent.
Even if the builder installs the osb over the required gypsum board.
The image below courtesy of the fine folks at codecheck illustrates this.
The two materials are clearly not equivalent when it comes to flame spread ratings fsr where 1 2 inch gypsum board is rated at 10 and 7 16 inch osb is rated at 150.
Frls are about how well a system of components contains a fire.
A ul fire resistant rated ceiling also provides a known specified fire resistance period.
26 gauge 0 48 mm steel sheet or other approved material and shall have no openings in the garage.
Attached garages must have a firewall separating the.
Ductwork and piping and the occupied space below.
If you are doing repairs in the garage you should replace with like materials but remember it is the wall system that is fire rated not the product itself.
If there are habitable rooms above the garage 5 8 type x fire rated drywall must be used at the ceiling.
First fire rated systems are only required if the garage shares a wall or a ceiling with the home.