SURFACE PREPARATIONSurface preparation should be carried out in accordance with SP 71.13330.2017. The substrate must meet the following requirements:
concrete, reinforced concrete, brickwork aged over 28 days and relative humidity no more than 4%
cement, cement-sand, cement-lime, lime plasters and putties aged over 14 days and relative humidity no more than 4%
polymer fillers older than 3 days, relative humidity no more than 1%
gypsum plasters and fillers older than 3 days, relative humidity no more than 1%.
- Clean the base of dust and dirt. From previously painted surfaces, remove loose layers of old paint and whitewash.
- Sand hard and firmly adhering glossy surfaces to a matte finish, and remove sanding dust.
- Level shallow depressions, cracks, and chips with the appropriate Bergauf filler.
- Surfaces previously covered with chalk or lime paints must be thoroughly cleaned until completely removed.
- Strengthen loose (soft) gypsum plasters, fillers, and polymer fillers with Bergauf Techno Primer or Bergauf Tiefgrunt deep-penetrating primer.
- Before applying Bergauf Fire Stop paint, prime the surface with Bergauf Techno Primer Isol insulating primer.
Number of insulating primer coats depending on the type of substrate:
— gypsum plasters and putties 2 coats
— polymer putties 1–2 coats
— cement plasters and putties 1–2 coats
— concrete 1–2 layers
— drywall 1–2 layers
— brick 1–2 coats
Apply Fire Stop non-combustible paint to the primed substrate no earlier than 4 hours later, provided the temperature is at least +15°C and the relative humidity is no more than 65%.
At temperatures below +15°C or relative humidity above 65%, the drying time of the primer before painting increases. The primer may take up to 14 days to fully cure.
Applying Fire Stop non-combustible paint over undried primer is not permitted!
Application of acrylic-based paints over non-combustible compositions is not permitted!
Work procedure:The surface to be painted must be sound, dry, clean, and free of substances that prevent adhesion; the base temperature must be at least +5°C, the ambient temperature for paint application must be between +10°C and +35°C, and the relative air humidity must be (65±5)%. When performing work, avoid exposure to direct sunlight, high humidity conditions, and precipitation.
It is recommended to use paint from the same production batch to avoid differences in the shade of the finish layer. Stir the paint thoroughly. It is necessary to stir with a wide, flat stick or a construction mixer at low speeds, carefully, avoiding the formation of air bubbles, for 1-3 minutes. It is not recommended to mix the material by shaking the closed can. After transportation and/or active mixing, if air bubbles occur, the paint needs to settle until they disappear. Do not dilute with water.
Apply the paint to a prepared, dry, clean surface with a brush, roller, or spray gun evenly in two layers. It is recommended not to take breaks when painting a continuous surface; in areas of "overlaps," work using the "wet-on-wet" method. Work should be finished at architectural boundaries (at building corners, under downspouts, etc.).
For rough surfaces such as textured plasters, brick, concrete blocks, and relief ceilings, it is recommended to use rollers with a pile length of 12-25 mm. For smooth surfaces such as putties, plasters, and concrete, use rollers with a pile length of 8-12 mm.
When carrying out work, avoid exposure to direct sunlight and conditions of high humidity.
Liquid potassium glass reacts chemically with glass, ceramics, glaze, metals, lacquer coatings, etc. These surfaces and elements must be covered before painting.
In case of accidental splashes, clean the paint off immediately with water.
After finishing work, wash hands and tools thoroughly with warm water.