For the purpose of preparation of mortar for lime plaster, fine aggregate has to be added to lime. The fine aggregate can be in the form of natural sand, crushed stone sand, stone dust, marble dust, flyash or surkhi. The aggregate should be hard, durable, chemically inert, free from organic impurities etc.

OPC is widely used for plastering due to its strength, durability, and workability. It is suitable for both interior and exterior plastering. OPC grades 33 and 43 are commonly used for plastering, with OPC 43 offering higher strength and durability.