Gypsum plastering produces a smooth finish with perfectly leveled corners while sand cement plastering results in cracks. Due to this, cement plastering requires putty but gypsum plastered walls are paint-ready and does not require putty application. Cement plastered walls may also require a whitewash to cover cracks.
Cement industry is the source of 8% of global greenhouse gas emissions as it consumes more fuel to produce the thermal energy required for cement production. Gypsum is a naturally deposited mineral. Gypsum plastering the wall would help you increase the LEED certification points of buildings.