Gypsum plaster has low thermal conductivity and good thermal properties and ensures energy and power saving. For the interior of the RCC ceiling/ roof, thickness of the plaster is generally 10 to 12 mm. For example, for brick walls thickness of plaster is 12 mm to 20 mm. The thickness of the cement plaster should not be less than 10 mm. Gypsum plaster is generally 11 mm thick for walls and 8 mm thick for ceiling and finish coat plaster is 2 mm thick. Sand and cement are mixed at the site in different ratios. Gypsum plaster It is ready to use and does not need sand.Ĭement plaster is a homogeneous mixture of Portland cement and sand with water. Gypsum plaster, gypsum is used as a binding material instead of cement. Gypsum plaster isn’t resistant to moisture.
Do note that improperly cured walls develop cracks.
The cement-plastered surface needs curing with water for at least 7 days. Gypsum plaster doesn’t need any curing saving water and time during construction. Gypsum plaster is highly resistant to mould and mildew.Ĭement plaster is prone to attacks by mould or mildew. So there are fewer Shrinkage cracks in gypsum plaster as compared to traditional cement plaster.Ĭement plaster has the tendency to shrink, which results in hairline cracks on the plastered surface. Gypsum plaster does not shrink as it undergoes very little expansion and contraction. Whereas gypsum plaster can only be used on interior rooms it cannot be used in wet areas like toilet bath kitchen wash area balconies etc.Ĭement plaster can be used for plastering both the external walls and the internal walls and ceilings of the building.
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