What material is drywall primarily made of?

Drywall, also known as gypsum board or plasterboard, is primarily made of gypsum, which is a soft sulfate mineral. The core of drywall consists of a layer of gypsum sandwiched between two sheets of heavy paper. This composition makes it an excellent choice for interior walls and ceilings due to its fire-resistant properties, acoustic insulation, and ease of installation.

In the context of construction and building materials, gypsum board is widely used because it provides a smooth surface ideal for painting or finishing. Additionally, being lighter than other wall materials like concrete or brick, it simplifies handling and installation.

Other materials listed, such as wood and metal composites, concrete, and plastic sheets, do not accurately represent the primary composition of drywall. These materials serve different purposes in construction but are not foundational to what drywall is made of.