All you need to know about Plastering


The construction industry has evolved a lot, and there are certain aspects of it that must be done with precision so that you can give the building the desired look and finish. Plastering is one such thing. It forms an integral part of both the interiors and exterior of the building. In this blog, we will be unfolding certain details about plastering.

What is Plastering?

Basically, it’s the process of application of cement mortar on the surface of the building. Applying plaster makes the surface smooth and seamless and also acts as a protectant layer. It prevents the surface from atmospheric elements like heat, rain, hail, snow, etc.

There are two objectives for applying Plaster:

1. Adding a protective layer

2. Giving it a decorative appeal

What are the different types of Plaster?

There two types of plasters:

1. Cement plaster- This is the uniform mixture of cement, sand, and water. These are the best for all kinds of plastering works. The commonly used proportion is 1:3, and if you are going for plastering of the interiors, then 1:4 is the right proportion.

2. Gypsum plaster– In this kind of plaster, gypsum is used in the place of cement. Gypsum is a perfect choice for decorative and architectural design. They are resistant to fire and provide better installation. Moreover, gypsum plaster dries up easily and undergoes very little expansion and contraction.

What is the right proportion mix of Plaster?

The right proportion of plastering for the internal wall is 1: 3 and the thickness goes up to 15 mm.

If you are choosing the option of plastering for the ceiling, then the thickness varies between 8mm to 12 mm, and the proportion is 1: 4 (cement: sand)

For external walls, the thickness of the plaster should be 20 mm, and the proportion is 1:6, this is the first coat, then you should go for a second coat or final coat which should be 1:4 and 8 mm thickness plus waterproofing mixtures. This acts as a protectant of the external wall.

What are the benefits of Plastering?

Plastering is an important part of the construction work:

1. It prevents water ingress into the brickwork. It also protects the wall from atmospheric elements like rain, hail, and snow, thereby increasing the life of the walls.

2. It also acts as a decorative layer


What are the steps that are involved in Plastering?

Plastering is a detailed process; here are the steps that need to be followed:

1. Preparing the surface by getting rid of any dirt, molds, or cracks.

2. Once the surface is ready, you need to prepare the plaster mix. We have already mentioned above about the plaster mix proportion.

3. Use a trowel to apply plaster on the surface. Make sure that you use a homogenous mixture so that it gets seamlessly applied on the surface.

4. Apply the plaster, begin with the first coat, followed by the second coat.

5. Once the plaster is applied, leave it for drying for at least seven days. Keep on sprinkling water on it to strengthen the plaster.

6.  After the plaster has dried, you can begin the painting work on it.


A plasterer is responsible for plastering. It has emerged as a great job option. Since the construction industry is expanding, there is a need for skilled individuals who can work here. Plastering is the work of precision, and if you wish to make a career in this field, you can begin with honing your skills by assisting an experienced plasterer. Make sure that you have an eye for detail and understanding about the plaster mix, only then you would be able to deliver the right service.