What is the consumption of plaster per 1 m2 of wall (gypsum, cement-sand, facade)

Plastering gives walls a smooth and beautiful appearance, making it a crucial step in finishing any building. Knowing how much plaster you’ll need is essential for planning and budgeting, whether you’re building a new structure or remodeling an existing one. Plaster comes in a variety of varieties, including gypsum, cement-sand, and facade plaster, each with unique qualities and applications, as well as varying amounts needed per square meter of wall space.

Because of its easy application and smooth finish, gypsum plaster is widely used. Because it offers a smooth, soft surface that is perfect for painting, it is frequently used indoors. The amount of gypsum plaster used per square meter can vary depending on the desired thickness and the state of the walls. When the surface is fairly even and smooth, less plaster is usually required.

On the other hand, because of its resilience to moisture and durability, cement-sand plaster is frequently used for walls on both indoor and outdoor surfaces. Compared to gypsum plaster, it usually requires a thicker application, particularly when applied to uneven or rough surfaces. This kind of plaster is preferred for external facades and high-traffic areas because of its strength and durability.

Additives are frequently used in facade plaster, which is made especially for external surfaces, to improve its durability and resistance to weathering. In addition to giving buildings an appealing finish, this plaster is essential for shielding them from the weather. The amount of facade plaster required per square meter can differ greatly depending on the desired texture and design as well as the particular product used.

By knowing how much each of these plaster types uses, one can estimate how much material will be required for a project and make sure there is enough to finish it without wasting too much. Additionally, because different plasters have different price points, it enables better budgetary planning. You can make the finish you want and stay within your budget by selecting the proper kind and quantity of plaster.

Plaster Type Consumption per 1 m²
Gypsum Plaster 8-9 kg
Cement-Sand Plaster 16-18 kg
Facade Plaster 10-12 kg

Factors influencing the mixture consumption per 1 m2 of plaster with a layer thickness of 1 cm, 2 cm

  • angle of deviation of the wall from the vertical and horizontal level, t.e. wall curvature;
  • type of finishing mixture.

The consumption is decreased when plastering is done by machine (mechanically). It takes more building mixture to finish a wall by hand. The wall should be leveled as much as possible during preparation to save materials for finishing the surface. If left unchecked, any existing flaws (cracks, depressions, chips, etc.) will increase the mixture’s consumption. If the composition was mixed incorrectly, the amount of plaster used per square meter may vary.

It is essential to prepare the finishing mixture in accordance with the manufacturer’s instructions in order to prevent this. Assuming a plaster thickness of 1 cm, the dry building mixture consumption rate per square meter is approximately 8.5 kg.

The indicator may vary depending on the finishing mortar brand. In order to determine the approximate duration of one 30-kg bag, you must carry out the subsequent mathematical operation: 30 kg: 0.28 = 8.5 kg. Based on the results, one square meter will utilise roughly one-third of the bag. Thus, one bag will cover roughly three square meters. In the event that the layer thickness is 2 cm, multiply 8.5 kg by 2 (as long as the manufacturer suggests 1 sq.

8.5 kg of dry mix, m.m. After doing the math, it is discovered that 17 kg of dry mix will be needed for plaster, which has a thickness of 2 cm (per 1 sq.m). To make a purchase, i.e., count the quantity of bags needed and calculate the expenses using this plan: 17 kg times 30 kg is 0.57. The outcome indicates that approximately half a bag will be consumed in 1 m2.

Whether gypsum, cement-sand, or facade plaster is being used will determine how much plaster is required to cover a square meter of wall. Gypsum plaster typically needs about 9 kg per square meter, cement-sand plaster about 17 kg, and facade plaster depends on the particular material and texture that is wanted. These approximations aid in the planning and budgeting of building projects, guaranteeing a seamless and effective procedure free from needless waste.

How to calculate the thickness of the layer for the wall in the room in mm

It is preferable to figure out the material costs after the decoration’s surface preparation is finished. Clearing out all the cracks, peeling off the poorly held elements, and fixing the flaws are required in order to achieve this. If the wall has any noticeable lumps, it is advised to remove them. After priming the surface and removing any dust, finish the finishing preparation. Adhesion diminishes in the absence of these prerequisites. Fresh plaster may peel off entirely or partially in such circumstances.

It is required to measure various locations on the wall in order to compute the layer. You must first set the guides for this task. Then, using a level and tape measure, identify the main locations where the surface deviates from the plane. The result will be more accurate the more of these points there are.

An illustration of how to determine the plaster thickness on a 10 square meter work area with deviations of 10 mm, 30 mm, and 50 mm is as follows:

  1. We determine the total sum of the numbers: 10 + 30 + 50 = 90 mm.
  2. We divide the resulting sum by the number of deviation points: 90: 3 = 30 mm.

The result obtained indicates that the plaster will have an average thickness of 30 mm throughout the entire surface. The minimum thickness required to level the work surface with lighthouse assistance is equal to the height of the guide bar.

The same calculation is made as when finishing without guides if the base has a large angle of curvature, meaning that the beacon heights are insufficient.

The consumption rates of material per square meter of wall plaster according to GOST

The interstate standard (GOST) states that the building mixture’s consumption is displayed in the following table:

Type of building mixture Norm consumption of plaster per 1 m2
Plaster 850 g (per 1 mm thickness)
Cement from 1400 g to 1900 g (with a thickness of 1 mm)
Decorative structure from 1.8 kg to 5 kg
Textured about 1500 g
Venetian 100-600 g/m2 (including application in 1 layer)

The size of the fraction also has an impact on the volume of the mixture that will be used for finishing.

You can determine which finishing option is the most cost-effective by using the comparison method to calculate consumption.

Planning any building or renovation project requires an understanding of the plaster consumption per square meter. Knowing the quantities required, whether you’re working with gypsum, cement-sand, or facade plasters, will help you plan your budget and guarantee that you have enough material on hand to finish the job quickly.

Gypsum plaster is a common option for interior walls because of its smooth finish and simplicity of application. The amount of gypsum plaster required per square meter will usually range from 9 to 11 kg, depending on the application’s thickness. This makes it an economical and practical choice for giving your house or place of business a modern appearance.

Cement-sand plaster is a popular choice for both interior and external walls due to its durability. Cement-sand plaster uses between 15 and 18 kg of material per square meter. This kind of plaster is appropriate for both residential and commercial buildings because it offers a robust surface that can endure a variety of weather conditions.

Specifically made for outdoor use, facade plaster protects buildings from the weather while also improving their appearance. Generally, 12 to 14 kg of facade plaster are required per square meter. Because of the resilience of this type of plaster, the exterior of your building will continue to look good for many years to come.

In conclusion, the kind of plaster you use and how it will be used greatly affect how much you’ll need. Smooth interior finishes are best achieved with gypsum plaster; durability is offered by cement-sand plaster; and external protection and visual appeal are provided by facade plaster. You can plan your projects more effectively, cut down on waste, and get the best results for your construction needs if you are aware of these requirements.

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Anna Vasilieva

Journalist with a technical education, specializing in construction topics. I can explain complex technical topics in simple and accessible language.

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