3 Review(s)

The advantage of POP plaster is that it expands very slightly on setting and is not, therefore, likely to cause cracking of surfaces as happens in the case of cement plaster. On drying out POP forms a sufficiently dense surface to resist normal knocks. POP plaster is comparatively easy to spread and level. Besides, the POP plasters have no appreciable chemical action on paint and do not cause alkali attack as in case of lime or cement plasters. This plaster is generally used as a finishing touch to cement and sand plaster undercoat. Mixed with water the plaster is spread and finished to a thickness of about 2 to 3 mm and sets in about 1 to 2 hours.