5/8-inch drywall can be used on walls, and will not sag when used on ceilings. This type of drywall is not typically used in residential homes, as it is heavier and more expensive than the other drywall options.
Why do you use 5/8 drywall on the ceiling?
The reason most builders use 5/8″ sheetrock on the ceiling is that that thickness of sheetrock is much stiffer. Another reason to go with a 5/8″ on the ceiling is that you will greatly reduce the chance of the sheetrock bowing between the ceiling joist, especially if they're on 24″ centers.
Is 5/8 drywall required for basement ceilings?
3 Answers. 5/8" drywall is rarely required in single-family residences. It was used historically because ceiling joists are often 24" on center, and 5/8 resists sag. You can certainly use no-sag 1/2" if you like.Feb 26, 2019