SUBSTRATE PREPARATIONSubstrate preparation should be carried out in accordance with SP 71.13330.2017. The surface must meet the following requirements:
concrete, reinforced concrete, brickwork older than 28 days and relative humidity not more than 4%
cement, cement-sand, cement-lime, lime plasters and putties older than 14 days and relative humidity not more than 4%
polymer putties older than 3 days, relative humidity no more than 1%
gypsum plasters and putties older than 3 days, relative humidity no more than 1%.
- Clean the substrate from dust and dirt. Remove loose layers of old paint and whitewash from previously painted surfaces.
- Hard and firmly adhering glossy surfaces should be sanded to a matte state, and sanding dust must be removed.
- Level shallow depressions, cracks, and chips with the appropriate Bergauf putty.
- Surfaces previously covered with chalk or lime paints must be thoroughly cleaned until completely removed.
- Loose (soft) gypsum plasters, putties, and polymer putties should be reinforced with Bergauf Techno Primer or Bergauf Tiefgrunt deep penetration primer.
- Before applying Bergauf FIRE STOP paint, the surface must be pre-primed with Bergauf Techno Primer Isol insulating primer.
Number of insulating primer layers depending on the type of substrate:
— gypsum plasters and putties: 2 layers
— polymer putties: 1–2 layers
— cement plasters and putties: 1–2 layers
— concrete: 1–2 layers
— gypsum plasterboard: 1–2 layers
— brick 1–2 layers
Application of FIRE STOP non-combustible paint on the primed substrate should be carried out no earlier than 4 hours later, provided a temperature regime of at least +15°C and relative air humidity of no more than 65% are maintained.
At temperatures below +15°C or relative air humidity above 65%, the drying time of the primer before painting increases. The primer's strength development time can take up to 14 days.
Application of FIRE STOP non-combustible paint over wet primer is not allowed!
Application of acrylic-based paints over non-combustible compositions is unacceptable!
Application procedure:The surface to be painted must be durable, dry, clean, and free from substances that prevent adhesion; the substrate temperature must be from +5°C, the ambient temperature for paint application from +10°C to +35°C, and relative air humidity (65±5)%. During work, avoid exposure to direct sunlight, high humidity conditions, and atmospheric precipitation.
It is recommended to use paint from the same production batch to avoid differences in the shade of the finish layer. Mix the paint thoroughly. Stirring should be done with a wide, flat slat 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 stirring, if air bubbles appear, 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; work using the "wet-on-wet" method at overlap points. Work should be finished at architectural boundaries (at the corners of the building, 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 coarse surfaces such as putties, plasters, and concrete — with a pile length of 8−12 mm.
When carrying out work, avoid exposure to direct sunlight and high humidity conditions.
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 contact, clean paint splashes immediately with water.
Upon completion of work, wash hands and tools thoroughly with warm water.