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5/8 Inch

Application of 5/8 Inch

5/8 Inch

These panels are commonly used for ceilings or for walls that require a prescribed fire-resistant rating.
When installed on ceilings, 5/8-inch-thick panels are less susceptible to sagging between the joists than 1/2-inch panels. Adding popcorn texture or another type of heavy surfacing material can add to the weight problem, making 5/8-inch drywall a better choice for ceilings.
Thicker drywall may be required by code for any wall or ceiling covered with a texture or skim coat where studs or joists are spaced 24 inches on-center rather than 16 inches.
This thicker drywall is often called fire-resistant drywall. Common walls between residential living spaces and attached garages, for example, require a fire-resistant construction, as do furnace rooms. This fire resistance can also be achieved by installing multiple layers of thinner drywall panels.

Application for walls or ceilings that require fire rating beyond 20 minutes