# All About cement required for 100 sqm plastering

Cement is an integral part of construction and plays a crucial role in providing strength and stability to structures. One of the common uses of cement in construction is in plastering, where it serves as the binding agent for various building materials. As the demand for efficient and durable construction continues to rise, understanding the right type and quantity of cement required for plastering is essential. In this article, we will delve into the details of all the essential aspects of cement required for 100 square meters of plastering. From the different types of cement available to the calculation of the right amount needed, this article aims to provide valuable insights for a successful plastering project.

Table of Contents

## How much cement required for 100 sqm plastering

Plastering is an essential process in the construction of buildings, as it helps to provide a smooth and even finish to the walls and ceilings. Cement is one of the primary components used in plastering, as it provides strength and durability to the plaster. The amount of cement required for plastering can vary depending on factors such as the type of surface, thickness of plaster, and the quality of cement used. In this article, we will discuss how much cement is needed for 100 square meters of plastering.

The first step in calculating the amount of cement required for plastering is to determine the thickness of the plaster. The most common thickness used for plastering is 12mm. This means that the thickness of the plaster when applied on the wall will be 12mm. Some factors, such as the type of surface, may require a thinner or thicker layer of plaster. However, for the purpose of this article, we will consider 12mm as the standard thickness.

The next step is to calculate the total area to be plastered. For a 100 square meter (sqm) area, the total area to be plastered will be 12,000 square centimeters (sqcm). This is calculated by multiplying the length and width of the area in meters and then converting it to square centimeters.

Once we have determined the total area and the thickness of plaster, we can now calculate the volume of cement required. The volume of cement is calculated by multiplying the total area by the thickness of the plaster. In this case, the volume of cement required will be 144,000 cubic centimeters (cc) or 144 liters.

Now, to convert the volume of cement to the number of bags required, we need to know the density of cement. The density of cement is usually around 1440 kilograms per cubic meter (kg/m3). This means that for a volume of 1 cubic meter, the weight of cement will be 1440 kilograms. Therefore, for a volume of 144 liters, the weight of cement will be 1440 x 0.144 = 207.36 kilograms (kg).

A standard bag of cement is usually 50 kilograms, which means that for a 144 liters volume of cement, we will need 207.36/50 = 4.14 bags of cement. Considering the wastage factor and roughness of walls, we can round it up to 5 bags of cement for 100 sqm plastering.

In conclusion, for plastering 100 sqm area with a standard thickness of 12mm, we will require approximately 5 bags of cement. However, it is always recommended to consider factors such as the quality of cement, surface type, and wastage while purchasing the required amount of cement for plastering.

## type of plastering

Plastering is an important aspect of building construction where a layer of plaster material is applied to the interior or exterior walls, ceilings, and other surfaces to provide a smooth, even, and durable finish. Plastering not only enhances the aesthetic appeal of a structure but also protects the underlying surfaces from moisture, weathering, and other damaging effects.

There are various types of plastering techniques and materials used in the construction industry, each having its own specific properties and applications. Some of the commonly used types of plastering are:

1. Cement plaster:
Cement plaster, also known as sand-cement plaster, is the most common type of plaster used in construction. It is a mixture of cement, sand, and water, which is applied in multiple layers on a wall. Cement plaster provides a hard and durable surface, making it suitable for both interior and exterior walls. It also has a high resistance to water penetration, making it ideal for areas prone to moisture.

2. Gypsum plaster:
Gypsum plaster, also known as plaster of Paris, is a smoother and finer plaster compared to cement plaster. It is made from gypsum powder, water, and additives, which give it excellent workability and adherence to surfaces. Gypsum plaster is mainly used for interior walls and ceilings and provides a smooth and even finish, making it suitable for painting and other decorative finishes.

3. Lime plaster:
Lime plaster, also known as lime putty, is a traditional and environmentally-friendly type of plaster. It is made from limestone, sand, and water, and has been used for centuries in construction. Lime plaster is highly workable, providing a smooth and glossy finish with better breathability and flexibility compared to cement and gypsum plasters. It is commonly used for interior walls and can also be used for exterior walls in areas with moderate weather conditions.

4. Clay plaster:
Clay plaster, also known as earthen plaster, is an eco-friendly and sustainable option for plastering. It is made from a mixture of clay, sand, and natural fibers such as straw or hemp. Clay plaster has good thermal insulation properties, making it suitable for both interior and exterior walls. It also has good breathability, allowing moisture to pass through, thereby reducing the risk of mold and mildew growth.

5. Acrylic plaster:
Acrylic plaster, also known as acrylic render, is a modern type of plaster that is gaining popularity in the construction industry. It is made from acrylic polymers, which provide better water resistance and flexibility compared to traditional plasters. Acrylic plaster is applied in thin layers and provides a smooth and durable finish, making it suitable for both interior and exterior walls.

In addition to these types of plastering, there are also specialized plasters such as fire-resistant plaster, soundproof plaster, and insulating plaster, which are used for specific purposes. As a civil engineer, it is essential to have a good understanding of these plastering techniques and materials to ensure the proper selection and application of plaster in construction projects.

## What is external brick wall plastering

External brick wall plastering is the process of applying a layer of cement-based material, known as plaster, onto the external surface of a brick wall. It is a crucial step in the construction of a building as it provides protection, strength, and aesthetic appeal to the exterior walls.

The purpose of external brick wall plastering is to create a smooth and even surface on the exterior walls of a building. This layer serves as a protective barrier against weather elements, such as rain, wind, and sunlight, and prevents water from seeping into the brickwork. It also helps to strengthen the brick wall by filling in any small gaps and cracks in the bricks, making it more resistant to damage.

The process of external brick wall plastering involves the application of multiple layers of plaster. The first layer, known as the scratch coat, is the base layer that is applied directly onto the brick wall. It helps to create a bond between the plaster and the brick surface. The second layer, called the brown coat, is applied on top of the scratch coat and is the thickest layer, providing strength and stability to the wall. The final layer, known as the finishing coat, is the thinnest layer and is responsible for giving a smooth and polished look to the wall.

The materials used for external brick wall plastering consist of a mixture of cement, sand, and water. This mixture is applied to the wall with the help of a trowel, and depending on the desired texture, can be finished with different techniques such as smooth, rough, or textured. The most common types of plaster used for external brick walls are cement-sand plaster, cement-lime plaster, and gypsum plaster.

In addition to providing a protective and aesthetic layer to the exterior walls, external brick wall plastering also offers several advantages. It helps to regulate the temperature inside the building by acting as an insulator, making it cooler in summers and warmer in winters. It also adds to the acoustic insulation of the structure, reducing noise from the outside. Furthermore, it acts as a fire-retardant, providing an added layer of safety to the building.

In conclusion, external brick wall plastering is an essential part of building construction. It not only adds to the structural integrity and durability of the building but also plays a crucial role in enhancing its visual appeal. With the right materials and techniques, external brick wall plastering can significantly improve the overall quality and performance of a building.

## Quantity of cement required for 100 sqm plastering

Plastering is a common technique used in construction to create a smooth, level and durable finish on interior or exterior walls and ceilings. Cement is the main ingredient used in plastering, and it plays a crucial role in determining the strength and longevity of the plastering.

The quantity of cement required for plastering largely depends on the area that needs to be covered. In this case, we will take the example of 100 sqm area to calculate the quantity of cement needed.

Step 1: Determine the thickness of the plaster

The thickness of the plaster is an important factor as it directly affects the quantity of cement required. A thicker plaster will require more cement compared to a thinner plaster. The most common thickness used for plastering is 12mm (0.012m).

Step 2: Calculate the volume of plaster needed

To calculate the volume of plaster needed, we need to know the area and thickness of the plaster.

Volume of plaster = Area x Thickness

Volume of plaster = 100 sqm x 0.012m

Volume of plaster = 1.2 cubic meters (m3)

Step 3: Determine the cement to sand ratio

The standard cement to sand ratio for plastering is 1:6, which means for every 1 part of cement, we need 6 parts of sand.

Step 4: Calculate the cement quantity

Now, to calculate the quantity of cement, we need to first convert the volume of plaster into the volume of cement. This is done by dividing the volume of plaster by the sum of the cement and sand ratio (1+6=7).

Volume of cement = (Volume of plaster / 7)

Volume of cement = (1.2 m3 / 7)

Volume of cement = 0.17 m3

Step 5: Convert volume to weight

Cement is usually measured in bags (50kg per bag), so we would need to convert the volume of cement to weight.

1 bag of cement = 0.0347 m3

Therefore, the number of bags of cement required for 100 sqm plastering = (0.17 / 0.0347)

= 4.9 bags (rounding up to 5 bags)

Hence, for plastering 100 sqm area with a thickness of 12mm, 5 bags of cement (250 kg) would be needed.

In conclusion, the quantity of cement required for 100 sqm plastering would be 5 bags (250 kg) based on a 1:6 cement to sand ratio and a thickness of 12mm. It is important to note that this is an estimated amount and may vary depending on the type of cement, sand quality, and other factors. It is always advisable to consult with a professional engineer for accurate estimates.

## What is internal brick wall plastering

Internal brick wall plastering is a construction process that involves coating the interior surface of a brick wall with a layer of plaster. This layer serves as a protective and decorative finish for the wall, creating a smooth and even surface for painting or wallpapering.

The purpose of internal brick wall plastering is to not only enhance the aesthetic appeal of the wall, but also to provide protection against weather, moisture, and wear and tear. Plastering also helps to improve insulation, acoustics, and fire resistance of a wall.

The plastering process usually starts by preparing the wall surface. This involves removing any dust, debris, or loose bricks, filling any gaps or cracks, and repairing any damaged areas. This ensures that the wall is in good condition and ready to receive the plaster.

Next, a base coat of mortar, also known as scratch coat, is applied onto the wall. This is typically a mixture consisting of cement, sand, and water. The purpose of this coat is to provide a rough and textured surface for the final coat of plaster to adhere to.

Once the base coat has set, the final coat of plaster is applied. This is usually a finer mixture that includes gypsum, lime, and water. The plaster is spread evenly and leveled using a trowel, and then it is smoothened with a float to achieve a smooth and flat surface.

Once the plaster has dried, it is ready to be finished. This can include sanding the surface for a perfectly smooth finish or adding decorative patterns or designs. The final step is usually painting or wallpapering the wall, which provides the desired look and further protects the plaster.

In recent years, the use of modern techniques and materials in internal brick wall plastering has gained popularity. These include the use of premixed ready-to-use plaster, automated spray application, and drywall plastering systems. These methods are efficient and can save time and labor costs.

In conclusion, internal brick wall plastering is a crucial step in construction that not only improves the esthetics of a wall but also provides protection and insulation to the interior of a building. With the advancement of technology, this process has become faster, easier, and more efficient.

## What is ceiling or concrete wall plastering

Ceiling and wall plastering is a common construction technique used to smoothen and finish the surfaces of concrete walls and ceilings in buildings. It involves the application of a thin layer of cement mortar or a plaster mix on the surface to create a smooth and even finish. This process not only enhances the aesthetic appeal of the structure but also provides protection and durability to the walls and ceilings.

The plaster layer is typically between 10mm to 20mm in thickness and is applied on masonry or concrete walls and ceilings. It is a crucial step in the construction process as it helps to cover any imperfections and irregularities on the surfaces, creating a clean and sleek look. Additionally, it also helps to improve the fire resistance and sound insulation properties of the walls and ceilings.

The process of plastering begins with the preparation of the surface which involves cleaning, wetting, and priming the walls or ceiling. This is crucial as it allows the plaster to stick to the surface better and prevents it from cracking or peeling off. It also helps to create a better bond between the plaster and the wall or ceiling.

Once the surface is ready, the plaster is mixed and applied in layers using a trowel or a plastering machine. The first layer is called the scratch coat, and it is applied using a horizontal motion. This layer provides a rough surface for the next coat to adhere to. The second layer, also known as the float coat, is applied in a similar way but with a vertical motion. This coat is responsible for creating a smooth and even finish. The final layer, known as the setting coat, is applied when the float coat is partially dried to achieve the desired texture.

Different types of plaster mix can be used depending on the requirements and budget of the project. Cement-based plaster is the most commonly used type, and it offers good strength and durability. Gypsum plaster, on the other hand, is a lightweight and easy to work with option suitable for interior walls. Lime-based plaster is known for its breathability and is often used in heritage buildings.

In conclusion, ceiling and wall plastering is an important aspect of construction that not only enhances the appearance of a building but also provides protection and durability. It requires skill and expertise to achieve a smooth and long-lasting finish, making it a crucial step in the construction process.

## Conclusion

In conclusion, cement is a crucial component in plastering projects, especially for larger areas like 100 sqm. The type and quantity of cement required for plastering depends on factors such as the surface condition, thickness of plaster, and desired finish. It is important to carefully calculate the cement needed and prepare the surface properly in order to achieve a smooth and durable plastering. With the right amount and quality of cement, along with proper techniques and tools, one can achieve a perfect plastering for their project. By understanding the requirements and considerations of cement for 100 sqm plastering, one can ensure a successful and long-lasting outcome.