There are different types of plasters are available such as:
- Lime plaster
When lime is used as a binding material it is called lime plaster.
Lime plaster is a type of plaster composed of hydrated lime, sand and water.
Lime plaster is similar to lime mortar, the main difference is based on use rather than composition.
Mortar for lime plaster is usually prepared by mixing sand and lime in equal proportions, to improve the strength small quantity of cement is added to it.
- Cement plaster
When cement is used as a binding material it is called cement plaster.
It is specially suited for damp condition.
Cement plaster is usually applied in one coat.
Thickness of coat can be 12 – 15mm or 20mm depending upon site conditions and type of building.
6mm thickness of plastering of 1:3 or 1:4 Ratio is recommended for cement plastering of RCC surfaces.
- Mud plaster
The surface to be prepared exactly in the same manner as that of for lime plaster or cement plaster.
Mud plaster is generally applied in two coats, the first coat being 18mm thick while the thickness of second coat kept 6mm.
- Stucco plaster
Stucco is the name given to decorative type of plaster which gives an excellent finish.
Stucco plaster can be used for interior as well as exterior surfaces.
It is usually laid in three coats making the total thickness of plaster about 25mm. The first coat is called scratch coat, the second coatis called fine coat, it is also known as brown coat and the third coat is called white coat or finishing coat.