Composition:
Water-based hybrid dispersion of bifunctional copolymers, mineral fillers, innovative additives
Color:
White**
Density:
1.8−1.9 kg/l
Grain size (fraction):
1.5 mm
Consumption per 1 m2:
2.4-2.8 kg*
Application thickness:
1.5 mm
Drying time to grade 3:
No more than 5 hours***
Resistance to atmospheric precipitation:
No earlier than after 24 hours
Subsequent work:
After 3 days
Shelf life:
24 months
* Material consumption depends on the quality of the substrate preparation, the method of application, the tools used, the qualifications of the installers, and may differ from the stated values.
** Some content of particles that differ from the main color is allowed, which does not affect the product’s technical characteristics. This is due to the presence in the composition of natural-origin fillers.
*** The stated quality indicators and recommendations are valid for an ambient temperature of +20°C and a relative air humidity of 60%. Under other conditions, drying time and adjustments may differ from those stated.
Purpose and properties
High-quality, based on the most modern solutions, ready-to-use plaster for application in facade thermal insulation systems based on mineral wool and polystyrene foam, as well as for finishing inside dry and damp rooms in buildings and structures of types A, B, C.
The innovative formulation creates a coating with high strength, a self-cleaning effect, and the best balance of high vapor permeability and low water absorption. Reinforcing microfibers provide the coating with additional strength, elasticity and resistance to shrinkage.
Technical features
The hybrid nature of the material ensures excellent adhesion and formation of strong bonds both with the substrate and within the coating itself; vertical bonds help form microtunnels for vapor venting. The coating is resistant to mold and fungal growth. It can be tinted to pastel and saturated colors.
Plastic and easy-to-work consistency allows the plaster to be applied to the surface easily and quickly and the desired texture to be formed.
Tinting
Decorative plaster is supplied as a base and can be computer-tinted (by machine) to colors from RAL, NCS and other color catalogs. Manual tinting is also possible using water-based tinting pastes with high light and weather resistance. The organization performing the tinting is responsible for the tinting result.
Color rendering features
Depending on the application conditions and the texture of the surface to be painted, the actual color shades may differ slightly from those shown in the color catalog.
Before use, a test application must be carried out and the dried coating checked for color conformity.
To avoid shade differences, it is recommended that, on one visual plane, the product from a single production batch be used (the batch number is stated on each package) or that materials from different batches be mixed in a 1:1 ratio in advance; the application method must remain unchanged.
Color recommendations
BERGAUF FACADE GRUNT primer is recommended to be applied in a color close to the color of the plaster being used.
Applying on facades materials in intensive or dark colors with a light reflectance value of less than 25% should be limited to small surfaces occupying no more than 10% of the facade, for example individual architectural details.
Application technology
Work should be carried out in accordance with SP 293.1 325 800.2017.
Before application, the plaster must be thoroughly mixed, as product separation may occur during storage. Thinning the plaster with water is permitted in an amount of no more than 5% by weight of the material.
Apply the plaster using a stainless steel trowel at a 60° angle to the surface; the layer thickness must match the grain size of the plaster. After some time, when the mixture stops sticking to the tool, you can start forming the texture with a plastic trowel. Hold the plastic trowel parallel to the surface and form the texture with light movements, without pressure.
“Pebble” texture is formed using small circular movements of the trowel directed in one direction, usually counterclockwise.
Work execution features
If it is necessary to stop work at the boundary of the plaster layer, masking tape is applied, which must be removed before the plaster hardens. To obtain a uniform texture, ensure a sufficient number of workers at each level of the scaffolding, and connect the sections between adjacent levels using the “wet-on-wet” method.
At an ambient temperature below +20°C and a relative air humidity above 60%, after application, the decorative plaster during the first 3 days should be protected from direct sunlight, wind and rain. In such conditions, it is recommended to cover the scaffolding with a special mesh or film, and install drip edges on the building. Do not allow freezing and drying out.
Indoor finishing should be carried out only in well-ventilated rooms, and after finishing work maintain air circulation until the coating is completely dry.
Subsequent work
The decorative plaster surface can be painted with acrylic, silicone or silicate paints. Painting is carried out no earlier than after 3–5 days, depending on environmental conditions.
Immediately after work, clean the tools with water. If the tools were not cleaned right away, they can only be cleaned later mechanically.
Limitations
It is prohibited to work during atmospheric precipitation, in fog, as well as on wet surfaces after rain and at temperatures below +5°C and above +30°C.
Storage and transportation conditions
Store and transport in tightly sealed containers at temperatures of at least +5°C and no more than +30°C. Five-fold freezing with a total duration of no more than 3 weeks is permitted at temperatures not below -20°C.
Protect the bucket with the product from excessive heating and avoid storage in direct sunlight. If the conditions are met, the guaranteed storage period in a closed factory package is 24 months from the date of manufacture.
Safety
The product is fire- and explosion-safe and does not contain flammable components.