Window plaster with a thickness of 2 mm has a standardized consumption of material

In the interior, in particular, a pane of plaster with a thickness of two millimeters is the preferred choice. Many manufacturers indicate on their data sheets the material requirements in terms of weight and volume based on this plaster thickness. Apart from the simple material calculation, the time window until it dries out must also be well estimated.

Calculate the amount of material in terms of weight and volume

If many interior walls are plastered in a new building, a preliminary calculation must be made for the purchase of materials. The plaster thickness of two millimeters represents a kind of standard dimension. Multiplied by the square meters of the walls, this results in a well-suited window plaster for the inside.

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The prerequisite for this textured plaster is that the grain size is also limited to two millimeters. If coarser and larger structures are desired, the calculation can be adjusted relatively as a help. With a plaster thickness of four millimeters, doubling the consumption is a useful rule of thumb.

Minimum consumption values and variances

The manufacturer's technical data sheets normally provide the following information in relation to a 25 kg sack and consumption:

  • Grain size: 0-2 mm
  • Water requirement per sack: six to seven liters
  • Material consumption per square meter: 3.2 to 3.4 kilograms per square meter
  • Yield per bag in square meters: 7.5 to 7.7 kilograms per square meter

These details are always minimum values. If plastering is carried out in warm external temperatures (from 25 degrees Celsius), in direct sunlight and on an absorbent surface, consumption can increase by up to twenty percent. Another cause of increased demand is rough concealed plaster, so-called rabotized plaster. The minimum specifications can be met by applying and painting a deep primer.

In addition to the basic material requirements according to the manufacturer, it is important to keep the exact same mixing ratio when changing the sack. For an optimal appearance, the largest grains in the plaster should always correspond to the thickness of the application.

Tips & Tricks You should calculate about twenty euros per square meter as labor costs for craftsmen for the application and structuring of the plaster of two millimeters. With thicker layers of plaster, not only does the drying time increase, but also the service life. This increases labor costs disproportionately.