Gypsum ceiling vs POP ceiling Which is more is a ...
Both are essentially composed of gypsum, a naturally occurring mineral. Gypsum board is factorymanufactured from gypsum with water and a few additives, sandwiched between paper. When gypsum is semidehydrated by heating, it forms plaster of paris or POP, a quicksetting fine white powder, which has many uses, including making false ceilings on ...