Historical Common Product: Drywall (Mixed Gypsum) - 2015
This information reflects our best understanding of product composition in 2015.
Drywall is ubiquitously used in building construction as interior wall enclosures, ceilings, and partitions in both load-bearing and non-load-bearing cases. There are many strains of Drywall including but not limited to acoustical, fire-resistant...
More about Historical Common Product: Drywall (Mixed Gypsum) - 2015
Drywall is ubiquitously used in building construction as interior wall enclosures, ceilings, and partitions in both load-bearing and non-load-bearing cases. There are many strains of Drywall including but not limited to acoustical, fire-resistant, moisture-resistant and mold-resistant varieties. This Common Product profile represents a regular Drywall product. Drywall is composed of gypsum plaster pressed between a paper or cardboard lining. The key material is gypsum (calcium sulfate), which is available in different hydration levels, and in anhydrous form. Natural gypsum stone is calcium sulfate-dihydrate (CaSO4*2H2O). The anhydrous calcium sulfate can be found in nature as anhydrite (CaSO4). Gypsum also occurs in large quantities as the industry by-product, otherwise known as flue-gas desulphurized (FGD) gypsum. This common product profile characterizes a drywall product made of a combination of naturally mined gypsum, FGD and some post-consumer gypsum.