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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 ...
The company began to diversify into building products as early as 1942, with the construction of a plaster mill in Sydney, and in 1947 the company began manufacturing plasterboard. It acquired Bradford Insulation in 1959, which produced heat insulation materials for buildings, and currently has a substantial share of the insulation market in ...
Such boards are also referred to as sheetrock, plasterboards, drywall, wallboards and gyprock. Gypsum waste in some countries also consists of gypsum blocks and plaster, among others. Three main types of gypsum waste based on their origin can be distinguished: [1] Gypsum waste from the manufacturing of gypsum products.
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.
Because up to 17% of gypsum products are wasted during the manufacturing and installation processes. Wallboard (Australia and others), plasterboard, Gyp (New Zealand), drywall (USA) or plasterboard (UK and Ireland) is frequently not re-used and disposal can become a problem.
Knauf Group is a multinational, family-owned company based in Iphofen, Germany, well known for drywall gypsum boards, founded in 1932. The company is a producer of building materials and construction systems comprising construction materials for drywall construction, plasterboard, cement boards, mineral fibre acoustic boards, dry mortars with gypsum for internal plaster and cement-based ...
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.
Vegetable plaiting materials; vegetable products not elsewhere specified or included 1,647 1 Indonesia: 496 30.1% 2 China: 262 15.9% 3 Malaysia: 128 7.7% 4 Mexico: 72 4.4% 5 Netherlands: 58 3.5% Animal, vegetable or microbial fats and oils and their cleavage products; prepared edible fats; animal or vegetable waxes: 172,468 1 Indonesia: 35,204 ...