![]() Sound isolation - Gypsum board wall and ceilings systems effectively help control sound transmission, preventing the transfer of unwanted sound to adjoining areas is a key consideration when designing a building, specifically when taking into account the intended activities of the occupants in the various parts of the building.Gypsum board serves to effectively protect building elements from fire for prescribed time periods. Under normal atmospheric pressure, it very effectively retards the transfer of heat and the spread of fire. It has a low flame-spread index and a low smoke-density index. Fire resistance - Gypsum board is an excellent fire-resistive building material.Gypsum board building systems can generally be installed at significantly lower labor costs than most alternate systems. Economical - Gypsum board is an inexpensive wall surfacing material that provides a fire resistant interior finish.Surfaces created using gypsum board are easily decorated and refinished. Durability - Gypsum board is used to construct strong, high quality walls and ceilings that offer excellent dimensional stability and durability.Gypsum board is easily finished using either a few hand tools or relatively modest machines. It can also be adhesively attached to many substrates. Ease of installation - Gypsum board panels are relatively large compared to other materials. It is a lightweight material. Gypsum board can be cut with either a utility knife or a variety of saws, and it can be attached with a variety of fasteners, including screws, nails, and staples.The board is then cut to length and conveyed through dryers to remove any free moisture. The paper becomes chemically and mechanically bonded to the core. As the board moves down a conveyer line, the calcium sulfate recrystallizes or rehydrates, chemically combining with the water that was removed during calcination and reverts to its original rock state. ![]() To produce gypsum board, the calcined gypsum is mixed with water and additives to form a slurry which is fed between continuous layers of paper on a board machine. When joints and fastener heads are covered with a joint compound system, gypsum wall board creates a continuous surface suitable for most types of interior decoration. All gypsum panel products contain gypsum cores, and can be faced with a variety of different materials, including paper and fiberglass mats. Gypsum board is the generic name for a family of panel products that consist of a noncombustible core, composed primarily of gypsum, and a paper surfacing on the face, back and long edges.
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