Window plaster is a type of scratch plaster that has not been scratched. The surface can be structured with a smoothing tool such as a grape brush, a cleaning strip or a smoothing trowel. The uneven and typical three-dimensional appearance is due to the composition. The type of processing and the grain size of the sand contained are used.
Grain is responsible for the depth of the structure
Right off the bat, creating a rough textured plaster by smoothing it sounds paradoxical. Among the types of structural plaster, the rubbing or pane plaster does not show the effects of shaping and modeling tools. Its texture is due to the consistency that is only "rubbed". With longer processing, for example with a felt board, it would more and more become a smooth plaster.
- Also read - Apply window plaster and smooth it out at the right moment
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- Also read - Applying and designing interior plaster
As a result of this "passive" design, in which the texture is exploited, the intensity and depth of the patterns in the plaster are created. The basic structure can be greatly changed by the direction, including changes in direction, when smoothing. The coarser the plaster was mixed, the more frequent and deeper "dents ", grooves and depressions arise.
Rubbing Techniques and Appearances
How coarse the structure will be depends on the selection and application of the plaster. The grain size of the sand involved and the mixing ratio are decisive. The higher the proportion of the coarsest grains of sand, the "rougher" the structure becomes.
The following rubbing and stroking directions give the structure a basic direction:
- Horizontal rubbing
- Vertical rubbing
- Diagonal grater
- Circular rubbing
- Fan-shaped rubbing
- Wavy rubbing
- Star-shaped rubbing
In the interior, grain sizes between two and six millimeters are common in order not to form holes, gorges, grooves, gullies and valleys that are too deep. Fine grains of up to four millimeters resemble the appearance of woodchip wallpaper, coarse grains of ten millimeters or more on scratched plaster. When processing on external walls, the grain sizes increase up to twelve millimeters.Tips & Tricks If you want to visualize the process of structuring grated plaster and plaster, imagine a mountain range like the Alps, the mountains of which are still soft. With a board several square kilometers you can drive over the mountain peaks and ridges and "shave" them. The valleys remain and reshape when they are partially filled by the eroded mountain mass.