SikaCor® Aktivprimer Rapid

2 years

In originally sealed containers in a cool and dry environment.

~1.6 kg/l

~60 % by volume

~78 % by weight

Dry heat up to max. + 80°C

Min. + 5°C

Max. 85 %, except the surface temperature is significantly higher than the dew point temperature, it shall be at least 3 K above dew point.

Between priming coats:
After drying stage 6 is achieved (see below)

Between SikaCor® Aktivprimer Rapid and 1-pack top coats:
Min. 1 day at + 20°C
  

Maximum recoat time is 6 months. Prior to further applications all contamination must be removed.

If necessary max. 2 % Sika® Thinner S may be added to adapt the viscosity.

Final drying time
Depending on film thickness, temperature and ventilation full hardness is achieved within several days.

Depending on local conditions full curing with top coat is achieved within 1 - 2 weeks.

Min. + 5°C

Theoretical material-consumption without loss for medium dry film thickness:

Apart from small areas the dry film thickness of SikaCor^® Aktivprimer Rapid should not exceed 240 μm per coat.

Ensure surfaces to be coated are clean, dry and free from all surface contamination such as oil, grease, dirt and corrosion products to achieve satisfactory adhesion. For contaminated and weathered surfaces e.g. primed areas we recommend to clean with SikaCor^® Wash.

Steel surfaces shall be blast-cleaned to Sa 2½ according to ISO 12944-4

Hot-dip galvanized surfaces shall be prepared by sweep blasting according to ISO 12944-4 with a non-ferrous blasting abrasive.

Stainless steel and aluminium shall be prepared by degreasing

Manually prepared surfaces shall be prepared by wire brush, trowel, power tool to surface preparation grade St 2 resp. St 3 according to ISO 12944-4.

Maintenance coatings: In case of well adhering old coating systems, careful cleaning is sufficient. Loose particles must be removed, corroded and defective areas must be prepared to PSa 2½, PMa or PSt 2 and patch-primed with SikaCor^® Aktivprimer Rapid

SikaCor® Aktivprimer Rapid is supplied ready for use.
Stir thoroughly prior to application.

The method of application has a major effect on achieving uniform thickness and appearance. Spray application will give the best results. The indicated dry film thickness is easily achieved by airless spray. Adding solvents reduces the sag resistance and the dry film thickness. In case of application by roller or brush, additional applications may become necessary to achieve the required coating thickness, depending on type of construction, site conditions, etc. Prior to major coating operations a test application on site may be useful to ensure the selected application method will provide the requested results.

By brush and roller:

• As a good wetting and penetration into the substrate is essential for the efficiency of the priming coat, the best result is achieved by using a distemper brush or similar
• Dry film thickness per application 40 - 60 μm by brush application

Conventional high pressure spraying:

• Nozzle size 1.5 - 2.0 mm
• Pressure 4 - 6 bar

  
Airless-spraying:

• Pressure min. 180 bar
• Nozzle size 0.38 - 0.53 mm (0.015 - 0.021 inch)
• Spraying angle 65° - 80°
• Dry film thickness per application 60 - 80 μm by spray application

SikaCor® Cleaner