Various types of drywall and construction materials can be used to construct drywall. Various brands and types of drywall, fastening materials, plaster, and drywall tape are among the materials that are used. Wall drywall is constructed from a variety of materials that each play a specific role in its construction. For example, the various types of wallboard have different purposes and are used for different things. Boards typically used for drywall are not designed to withstand water. Water-susceptible rooms should be constructed with a type of wallboard called Greenboard. In areas where water may accumulate such as near a sink or toilet, the green board is most commonly used. The installation of drywall is a difficult task, and it must be performed properly to prevent walls from being damaged by improper installation.