Another most important advantage of drywall is resistance to ignition, which determines the main property of gypsum. The structure of the gypsum is a sulfate-calcium salt, in the crystals of which there is water in the form of crystallinerate. In the process of heating, part of the water is lost, and when 130 degrees reaching the stage of burnt (plaster) gypsum (alabaster). Emitted steam from the water, is not able to burn.
