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Drywall (also called plasterboard, dry lining, [1] wallboard, sheet rock, gib board, gypsum board, buster board, turtles board, slap board, custard board, gypsum panel and gyprock) is a panel made of calcium sulfate dihydrate , with or without additives, typically extruded between thick sheets of facer and backer paper, used in the construction ...
Gypsum materials consist of calcium sulfate dihydrate (CaSO 4 ·2H 2 O). Sulfate-reducing bacteria convert sulfates to toxic hydrogen sulphide gas; they are killed by exposure to air, but the moist, airless, carbon-containing environment in a landfill is a good habitat for them.
In 1944, BPB acquired its large rival, Gyproc Products Limited; after that there were only a handful of small companies and when ICI withdrew from the market in 1968 BPB was the only British producer of plaster and plasterboard. Organisationally, all domestic gypsum activities were consolidated in the British Gypsum subsidiary and the parent ...
In December 2005, Saint-Gobain purchased the British company BPB plc, the world's largest manufacturer of plasterboard, for US$6.7 billion. [31] In August 2007, the company acquired Maxit Group, doubling the size of its Industrial Mortars business and adding the manufacture of expanded clay aggregates to its business portfolio.
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 ·2H 2 O. [4] It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, drywall and blackboard or sidewalk chalk.
Plaster veneer (American English) or plaster skim (British English) is a construction methodology for surfacing interior walls, by applying a thin layer of plaster over a substrate—typically over specially formulated gypsum board base, similar in nature to drywall.
Yet at the same time that is also what it is commonly known as (at least in AU) as that is pretty much the only plasterboard that one can obtain from afaik or have seen. It is very much like Formica in which that is also a trademark name, yet that is commonly what most americans know that (composite) laminate as. While in the industry and ...
Lath and plaster largely fell out of favour in the U.K. after the introduction of plasterboard in the 1930s. [2] In Canada and the United States, wood lath and plaster remained in use until the process was replaced by transitional methods followed by drywall (the North American term for plasterboard) in the mid-twentieth century. [citation needed]