Drywall, also known as plasterboard, wallboard, or gypsum board, is a building material used for interior walls and ceilings. It is primarily made of gypsum, which is a naturally occurring mineral containing calcium sulfate dihydrate, and is typically extruded between thick sheets of facer and backer paper. The plaster is mixed with fiber, such as paper, glass wool, or a combination of these materials, as well as additives like plasticizer, foaming agent, mica, clay, and resin. These additives can reduce mildew, flammability, and water absorption
. The use of drywall became prevalent in North America in the mid-20th century as a time- and labor-saving alternative to traditional lath and plaster construction
. It is important to note that drywall is highly vulnerable to moisture due to the inherent properties of its materials, and damaged drywall can lose its strength and grow mold
