Drywall is a type of cladding used for interior walls and ceilings. It consists of gypsum sandwiched between two sheets of paper and is easy to install. Drywall is a popular choice for homes because it is efficient and provides sound insulation and fire protection.
Drywall, also known as drywall or drywall, is a type of cladding used for interior walls and ceilings. Since the mid-1940s, it has been the primary construction of the wall in most homes. Vertical pieces of wood frame a room while providing support for sheets of drywall. These sheets are attached to the frame by screws or nails and stapled together using a special drywall compound, which leaves a flat, even surface. The result is a smooth wall that is easy to finish.
The core of the board is the mineral gypsum, or hydrated calcium sulphate. It is the main ingredient in plaster of Paris, as well as a component of cement. Gypsum mines are found all over the world and large deposits have been found in the United States. In addition to this natural form, a synthetic form of gypsum is produced as a byproduct of coal-fired power plants.
The drywall manufacturing process begins with the mineral being ground up and combined with starch to aid in adhesion. Depending on the type of panel to be made, other trace ingredients may be added at this point. Just enough water is added to create a slurry of the right consistency. The plaster slurry is then sandwiched between two heavy sheets of paper and kiln dried to make the panel stiff. The large sheets of drywall are then cut into standard sizes.
Development of this type of wallboard began as early as 1917, but it didn’t become popular for residential home use until after World War II. Before that, the construction of the walls consisted mainly of laths, or horizontal wooden supports, covered with plaster. Plaster walls were time consuming to build and usually required professional application. Drywall construction was much more efficient and did not require the specialized work that plaster walls sometimes required.
In addition to being a finished, load-bearing surface for interior walls, drywall can also provide sound insulation and help limit the spread of fire. There are many manufacturers around the world. Most sheets measure in widths of 4 feet (120cm) and the most commonly available lengths are 8 feet (244cm) or 12 feet (366cm). Typical thickness used on walls is 0.5 inch (12.5 mm) and 0.375 inch (9.5 mm) for ceilings, while sound barriers or fire protection usually require 0.625 inch (15 mm).
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