One of the most important things to think about when plastering walls is the quantity of material required. This is particularly true for cement-sand plaster, which is a preferred option for many because of its adaptability and longevity. Understanding how much mixture to use for each square meter will help you avoid running out of materials midway through the project or having extra that is thrown away, saving you time, money, and effort.

Whether you’re working on a bigger project or just remodeling a single room, accurate calculations are crucial. The thickness of the plaster layer and the state of the wall surface are two examples of factors that can greatly affect the required quantity. You can buy the appropriate quantities, make more efficient plans, and cut down on pointless trips to the grocery store by being aware of these factors.

We’ll go over everything you need to know about cement-sand plaster consumption per square meter in this article. We’ll go over the fundamentals, talk about the factors that influence usage, and provide advice on how to measure and combine your materials to get the best results.

- What affects the consumption of the material?
- Surface defects
- Type of finish
- Type of building base
- Method for calculating the product
- Calculation example
- Consumption rate of cement-sand plaster
- Video on the topic
- Which cement-sand mixture to choose for plastering walls?
- Why it is NOT possible and not recommended to plaster the ceiling with cement-sand plaster?
- WHAT IS THE CONSUMPTION OF PLASTER?
- How to calculate the consumption of plaster?

## What affects the consumption of the material?

A number of factors influence how much of the product is consumed. It is advised to consider these factors when determining how much product needs to be finished.

### Surface defects

The amount of cement-sand plaster needed per square meter of surface area is determined by the building base’s imperfections and unevenness. The material is used to eliminate the curvature without the need for beacon installation if the differences are less than 2.5 cm. Plastering is done along the guides if the unevenness is more than 30 mm. It is advised to use a grinder to cut differences larger than 30 mm. Plaster is not advised to be used to remove such irregularities because a thick layer of the material can cause surface flaws like cracks to appear. Additionally, a thick layer causes the finish to collapse and the material to peel off the surface.

Money is spent more when more treatments are administered. For this reason, it is advised to include the layer’s thickness in the material calculation.

### Type of finish

The amount of material used also depends on the type of work if cement-sand plaster is used for finishing. For rough finishing, the majority of the material is used. Plastering is done to cover up flaws and level the building base. Up to 50 mm of layer thickness is present. Less material is needed for completion. In this instance, the plaster layer can be up to 5 mm thick.

### Type of building base

The product’s consumption is influenced by the kind of building base:

- Concrete. The material is applied to such a surface in both a thick and a thin layer. It all depends on the defects. Plaster thickness – 5-50 mm. The greater the curvature of the building base, the thicker the layer.
- Aerated concrete. For such a building base, a 5 mm plaster layer is enough. If you put more material than this value, the product will peel off and crack.
- Brickwork. Here, everything also depends on the presence of defects and the degree of surface differences. Layer thickness – 5-50 mm.
- Wood. Usually wood is not plastered. The material is used in rare cases, and the layer thickness is 3-5 mm.

When finishing with a mesh, the layer becomes thicker. This needs to be considered when figuring out the material.

## Method for calculating the product

Guidelines for figuring out how much material to finish:

- Evaluate the building base for curvatures, large cracks and depressions.
- Fix the beacons on the building base (as in the photo below), the minimum amount is tri-profiles on the surface.
- Set the main points by which the curvature of the building base is calculated.
- Measure the curvature to determine the thickness of the plaster layer.
- Calculate the total curvature by adding, divide the resulting figure by the number of points. This is the consumption of cement-sand plaster per m2.

You can use the online calculator instead of these manipulations. The following should be entered into the program to determine the material consumption:

- the height and length of the surface;
- the thickness of the material layer;
- the type of composition – in our case, this is cement-sand plaster;
- the weight of the bag.

The material consumption per square meter is displayed by the calculator once this data is entered.

## Calculation example

You must get acquainted with the example in order to understand how to compute the composition using beacons.

- a building base with an area of 20 m2;
- three beacons are fixed on the surface at an equal distance from each other.

In light of this:

- the deviation points yield figures of 1, 3 and 5 cm;
- sum up: 1+3+5 = 9;
- calculate the difference between the sum and the deviation points: 9:3 = 3 cm.

The composition’s thickness is the resultant figure. The manufacturer’s recommendations, which are listed on the packaging, should then be read. This data pertains to the amount of plaster used per square meter for a specific application layer. Determine the amount of material required for each unique case based on these indicators. The following formula will be used to determine the material consumption if the manufacturer reports a 9 kg per m2 material consumption with a 1 cm layer thickness:

- layer thickness is 30 mm, therefore the consumption for one square meter is calculated using the formula: 0.03 * 10 = 30 kg;
- the area of the building base is 20 m2, therefore for such a surface you will need 20 * 30 = 600 kg;
- if you take a bag of dry mix weighing 30 kg, then 20 bags will be required for finishing.

It is advised to take the material in batches of twenty-one bags.

Comprehending the amount of cement-sand plaster utilized per square meter is crucial for organizing and allocating funds for any wall finishing undertaking. The thickness of the plaster layer and the surface condition are two major factors that determine how much material you need, and this article will walk you through them. With this knowledge, you can calculate the amount of cement-sand plaster needed more precisely, preventing waste and guaranteeing a smooth, polished finish.

## Consumption rate of cement-sand plaster

There are consumption rates specified for each type of plaster. The cement-sand composition is 17 kg per square meter with a one-centimeter layer thickness. The manufacturer influences the consumption.

Plaster Thickness (cm) | Consumption (kg per m²) |

1 cm | 15-17 kg |

2 cm | 30-34 kg |

3 cm | 45-51 kg |

4 cm | 60-68 kg |

For any wall finishing project, knowing how much cement-sand plaster is used per square meter is crucial. You can prevent needless costs and guarantee a seamless and effective process by accurately estimating the quantity of materials needed.

The amount of plaster required depends on a number of factors, including the type of work being done, the thickness of the plaster layer, and the state of the surface. A thorough evaluation of these factors will assist you in choosing the appropriate amount, resulting in a superior finish.

Knowing this will give you more confidence when working on wall finishing projects because you’ll know you have the proper amount of cement-sand plaster to get the desired effects.

## Video on the topic

### Which cement-sand mixture to choose for plastering walls?

### Why it is NOT possible and not recommended to plaster the ceiling with cement-sand plaster?

### WHAT IS THE CONSUMPTION OF PLASTER?

### How to calculate the consumption of plaster?

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