Drywall is a flat panel made of gypsum plaster sandwiched in between two sheets of thick paper. It adheres to metal or wood studs using nails or screws. Sheetrock is a specific brand of drywall sheet. These terms are often used interchangeably.
drywall, also called wallboard, any of various large rigid sheets of finishing material used in drywall construction to face the interior walls of dwellings and other buildings. Drywall construction is the application of walls without the use of mortar or plaster.
Drywall materials include plywood and wood pulp, asbestos-cement board, and gypsum. Wood fibre and pulp boards are made by compressing together layers or particles of wood with adhesives and are manufactured with wood grain and a variety of other surface effects. They are also available with high acoustic (sound-suppressing ) and thermal (insulating) capacities. Asbestos-cement boards are formed from a mixture of portland cement and asbestos fibre that has been wetted and then pressed into a board or sheet form. Organic fibres are added to some asbestos-cement boards to promote resiliency and ease of machining, and boards can also be treated with curing agents, water-repellent admixtures, and a variety of other substances to improve their performance and the ease with which they can be worked. Thin asbestos-cement sheets are usually backed with plywood or insulating board to increase their resistance to impact.
