Updated February 2nd, 2019
Plaster is a building material. The main purpose of using plaster in building construction is to decorate or protect surfaces of walls or ceilings. It doesn’t have any load bearing capacity.
Plaster is sometimes called render when using the exterior of the building.
We use different types of plaster in building construction. And it is categorized based on the material used to make plastering paste.
Types of Plaster in Building Construction
Some common types of plaster are –
- Cement plaster
- Clay plaster
- Gypsum plaster
- Lime plaster
1. Cement Plaster
It is the common type of plaster we normally use in building construction.
The main ingredients of cement plaster are cement and sand.
It can be used in both interior and exterior surfaces.
Method Of Cement Plastering:
You’ll find readymade cement plaster bag on the market. Readymade cement plaster is found on dry condition. You just need to mix water to that dry powder to prepare plastering paste. While mixing water, follow the specification provided by the manufacturer.
You can also prepare cement plaster on site by mixing cement and sand. In fact most of the time we use manually mixing mortar.
While mixing cement and sand, we use the ratio of 1:3 or 1:4 depending on the purpose of plastering. When we say 1:4, we mean that one unit cement will be mixed with four units of sand.
After mixing the cement and sand in the dry state properly, the required quantity of water is added to the mix.
After mixing water it is then applied to the surface.
The thickness of cement plaster varies depending on the surface condition. It can be 12mm to 25mm. It is normally applied in one coat.
Read More: How to Plaster on a Surface
2. Clay Plaster
When clay or mud is used to make the plastering mortar, that is called clay plaster. It is also called mud plaster.
The main ingredients of clay plaster are Mud and Sand.
Method Of Clay Plastering:
To prepare the plaster paste, clay and sand are mixed in dry state and then water is added to the mix.
The surface preparation for clay plastering is same as the cement plastering.
The clay plaster is normally applied in two coats. The thickness of the 1st coat is about 18mm while the 2nd coat is 6mm.
3. Gypsum Plaster
Gypsum plaster can be a good alternative to cement plaster.
Gypsum is used as binding material in gypsum plaster. It is normally found in the ready-mix bag in the market.
Method Of Gypsum Plastering:
You need to add water with the ready mix powder.
The method of gypsum plaster is same as the cement plaster.
The recommended thickness of gypsum plaster is 6mm to 12mm.
4. Lime Plaster
When lime is used as a binding material for preparing plastering mortar, that is called lime plaster.
Lime plaster is prepared by mixing hydrated lime, sand, and water.
Methods Of Lime Plastering
The method of lime plastering is similar to the method of cement plastering.
Types of plaster mostly depends on the material used as binder in the plastering mortar.
And the purpose of plastering is almost the same for all types of plaster.
The method of plastering is also similar to all types of plaster.
Share Your Expertise
What types of plaster do you use most for your building construction project? Please share in the comments below…