Fire Rated Material For Garage Ceiling

First fire rated systems are only required if the garage shares a wall or a ceiling with the home.

Fire rated material for garage ceiling.

Dryer exhaust ducts that penetrate garage walls are serious fire hazards. Fire hazard properties on the other hand refer to a material s properties such as how easily it burns. 26 gauge 0 48 mm steel sheet or other approved material and shall have no openings in the garage. If there are habitable rooms above the garage 5 8 type x fire rated drywall must be used at the 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. 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. Again this is not a fire rated assembly but merely what is required to meet the proper fire separation requirements. The image below courtesy of the fine folks at codecheck illustrates this.

Inch gypsum board for use in garage wall and ceiling separations. Attached garages must have a firewall separating the. 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 is living space above the garage the ceiling would have to be 5 8 type x drywall or equivalent.

Frls are about how well a system of components contains a fire. Ductwork and piping and the occupied space below. By glenda taylor in most communities building codes require the construction of a fire rated barrier between the garage and any living space. Walls rated for fire resistance can be built of poured in place concrete precast concrete wall panels concrete masonry units brick layers of gypsum drywall board supported by steel studs and.

Even if the builder installs the osb over the required gypsum board.