The latest government study on Chinese drywall has revealed a "strong association" between the drywall and corrosion in homes that may physically irritate their residents.

Government agencies, collectively called the "Interagency Drywall Task Force," have been studying homes containing Chinese drywall after homeowners reported health problems and structural degradation after living in homes that used Chinese drywall from 2004-2007, when domestic drywall was in short supply.

Drywall building material, also called wallboard, gypsum board and plasterboard, is made of a flat sheet of gypsum covered on both sides with a thin layer of cardboard. It goes by such brand names as Sheetrock, Tablaroca, Gyprock and ToughRock.

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