What is the minimum thickness requirement for gypsum board?

The correct answer regarding the minimum thickness requirement for gypsum board is 1/2 inch. In residential construction, gypsum board is widely used for wall and ceiling applications due to its fire-resistant properties and ease of installation.

The minimum thickness of 1/2 inch is often specified for areas such as walls in living spaces and for ceilings, as it provides an adequate balance of strength and weight, ensuring proper support and performance. Thicker gypsum board, such as 5/8 inch, is required in specific applications, particularly for fire-rated assemblies, but 1/2 inch is generally considered the standard minimum for most residential applications.

Some may suggest thinner options like 1/4 inch or 3/8 inch for certain assemblies, but these are not typically classified as suitable for general wall and ceiling construction in residential settings. Understanding the minimum thickness requirement ensures compliance with building codes, safety, and structural integrity.