How plaster is made
Plaster is a material used for both protective and decorative purposes on walls and ceilings. Gypsum is extracted from the ground and churned up into small pieces. Water is then removed from the gypsum and additives are added. Gypsum is bagged up in a powder form and once re mixed with water it begins to turn back to its original hard state but is manipulated by a trowel to form a smooth paintable surface.