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Drywall
Panel made of gypsum, used in interior construction / From Wikipedia, the free encyclopedia
Drywall (also called plasterboard, dry lining,[1] wallboard, sheet rock, gib board, gypsum board, buster board, turtles board, slap board, custard board, and gypsum panel) is a panel made of calcium sulfate dihydrate (gypsum), with or without additives, typically extruded between thick sheets of facer and backer paper, used in the construction of interior walls and ceilings.[2] The plaster is mixed with fiber (typically paper, glass wool, or a combination of these materials); plasticizer, foaming agent; and additives that can reduce mildew, flammability, and water absorption.
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In the mid-20th century, drywall construction became prevalent in North America as a time- and labor-saving alternative to lath and plaster.[3]