What is gyprock made of?

Gyprock, also known as drywall or gypsum board, is primarily made of gypsum, a naturally occurring mineral composed of calcium sulfate dihydrate. The gypsum is sandwiched between two sheets of heavy paper or fiberglass matting, which provide structural support and a smooth surface for finishing. This material is widely used in construction for walls and ceilings due to its ease of installation and fire-resistant properties.