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Type-X drywall is available only in 5/8-in. thickness, in widths of 48 in. and 54 in., and in lengths up to 16 ft. Type-X drywall meets ASTM International standards and is often used in fire-rated assemblies such as walls and ceilings that separate garages from living spaces.
There is a self-adhesive fire-rated tape available that doesn’t require a coat of joint compound to maintain its fire rating. It is an excellent choice for fire-taping gable ends and attics. Use the right tape: Fire tape is a self-adhesive drywall tape that does not require joint compound to achieve its fire rating.
The 1/2-in.-thick panels are for use in non-fire-rated applications, such as residential construction, remodeling, and repair projects. Lightweight drywall is also available in a non-fire-rated 5/8-in.-thick panel. VOC-absorbing drywall. Many people spend as much as 90% of their time indoors, so it is important to manage indoor air quality.
The term fire resistance means the ability of a constructed assembly (a wall or a ceiling covered with drywall) to contain a fire. The fire-resistance rating for each thickness of drywall is measured in intervals of time: 45 minutes for 1/2-in. fire-resistant drywall, 60 minutes for 5/8-in. panels, and 120 minutes for 3/4-in. panels.
All 5/8" really all drywall has fire resistive properties but when the term fire rated is used it is generally used in the contex of a UL rated assembly. You can or used to be able to buy 5/8 with a regular core (slightly cheaper than the fire rated), you can buy it as type x and type C, both as I recall, have ratings for use in UL rated walls.
The local inspector is telling me I have to use 5/8″ fire-rated drywall on all of the interior walls below, and since I’m using manufactured trusses (with those gang-nail plates holding them together) that the ceiling of the garage/shop needs to be covered with either two 5/8″ fire-rated drywall layers, or one layer hung from resilient ...
Sometimes building assemblies are rated as ignition-resistant, though it is more commonly a designation for materials. Fire resistant. This rating is commonly given to materials and assemblies that are designed to contain fire and retain structural integrity, offering time for occupants to escape and for firefighters to arrive.
Fire rated drywall is treated and reinforced so that it will not crumble. Fire rated wall assemblies require fire rated drywall so that they hold up to a fire for some substantial period of time, for example, 1 hour (depending on the rating required), keeping the fire from burning through to the rest of the structure.
It has no drywall or insulation in the walls or ceiling, so for fire spread, I want to remedy that. (Plus it will add help with cold floors in the winter) Problem is, we are in the middle of a long term restoration and there is lots of electrical and plumbing in the joist bays that I may need to access in the future.
Fire-rated, self-closing, and thermally appropriate exterior-type door; Min. 1/2-in gypsum on walls that support living areas above; One GFCI-protected outlet per bay; Floor sloped to vehicle garage door or drain; Min. 1/2-in. gypsum on walls shared with living spaces; Insulation behind drywall (recommended) Doors