Fire Rated Material For Garage Ceiling

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.

Fire rated material for garage ceiling. If there is living space above the garage the ceiling would have to be 5 8 type x drywall or equivalent. 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. Ductwork and piping and the occupied space below. 26 gauge 0 48 mm steel sheet or other approved material and shall have no openings in the garage.

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. Ducts in the garage and ducts penetrating the walls or ceilings separating the dwelling from the garage shall be constructed of a minimum no. If there are habitable rooms above the garage 5 8 type x fire rated drywall must be used at the ceiling. By glenda taylor in most communities building codes require the construction of a fire rated barrier between the garage and any living space.

Frls are about how well a system of components contains a fire. An underwriters laboratories ul fire resistant rated ceiling system provides separation between the elements of the building services i e. First fire rated systems are only required if the garage shares a wall or a ceiling with the home. The image below courtesy of the fine folks at codecheck illustrates this.

Fire hazard properties on the other hand refer to a material s properties such as how easily it burns. Again this is not a fire rated assembly but merely what is required to meet the proper fire separation requirements. Dryer exhaust ducts that penetrate garage walls are serious fire hazards. One way of reducing the effects of a fire is to use materials on the walls floor and ceiling that don t encourage smoke and fire.

A ul fire resistant rated ceiling also provides a known specified fire resistance period.