Decorative plaster is applied in several stages:
Thorough wetting of the substrate and partial drying
Rubbing primer
Applying the base coat of plaster
Stamping the desired pattern using templates
Forming an embossed surface
Embossed surface painting
Sealing of the surface layer
The entire procedure for applying decorative plaster lasts 1 – 3 days, depending on climatic conditions. In order to perform work in high quality, the key role is played by the experience and skill of the master.
Weather
When applying plaster, it is necessary to take into account the weather conditions and take appropriate measures.
At high temperatures, sunlight can speed up the drying of the bonding layer too quickly and thus slow down the whole work.
At low temperatures before frost, the finished coinage should be stored for at least 48 hours. The temperature of the primer should not fall below +5 degrees Celsius.
Primer
A wide range of primers can be applied to embossed decorative plaster – from dry masonry blocks to wood. It is only necessary to ensure good adhesion by applying a primer coat on a damp surface and applying a subsequent coat before the coating dries. Cracks of any size can be repaired with repair mortars. The base layer is applied to the living paint in a thin layer (about 3 millimeters) and then a rough layer to increase mechanical adhesion.
The base coat must be ready for the next coat to be applied. Ready time depends on climatic conditions and ranges from 6 to 8 hours.
The top decorative layer of plaster
On a sufficiently prepared primer, a layer of decorative plaster can be applied in layers of more than 30 mm, so long as there is no sagging of the mass. The required thickness depends on the chosen decor and usually ranges from 3 to 24 mm, with a maximum of 80 mm possible. The surface is not smooth because decorative finishing will be carried out on it. To achieve high quality beauty, the depth of the decorative plaster must correspond to the depth of the selected decoration decor.
For example:
Carved stone – 7 – 9 mm
Brickwork – 10 mm
Mountain stone – 18 mm
Template stamping
Before stamping, you can texturize the surface using wall textures; this will ensure the authentic appearance of the final surface.
For stamping decorative relief, special polyurethane prints are used. There may be unsightly excess plaster in the impression areas. They are removed after 6-8 hours, and the wall is modeled. Small defects can be seen, such as insufficient impression, dull texture and cracks, which are repaired with painting tools such as brushes, sponges, pointing devices, decorative templates.
The surface tinting
The color of the surface can be provided in two ways:
Toning with decorative mixtures with the addition of powder pigments with the addition to the kneading solution
surface painting with liquid colors.
Usually used painting with fluid paints than the pressure of the colors to the solution. Paint can be applied in any way, depending on the surface and the desired color shade. Colored sprays are used in large areas, and painted brushes on small areas.
Another method is to apply paint to the selected boulders or stone, which is painted individually with great caution. In this way a higher aesthetic appearance is achieved, but much more slowly. The main recommendation for painting is “less means more”.
The wall looks better until the color is tasteless. When the painting is finished, you can cover the plaster with a transparent surface layer, which will protect the wall from adverse weather conditions and increase the chemical resistance of the surface.