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

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

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.

Min. + 5°C

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

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

Between SikaCor® Aktivprimer Rapid and SikaCor® ZP Primer:
Min. 3 days at + 20°C

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.

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

Manually de-rusted surfaces:

Prepare surface by wire brush, trowel, power tool to surface preparation grade St 2 resp. St 3 according to ISO 12944-4.

Steel:

Blast-cleaning to Sa 2 ½ according to ISO 12944-4.

Galvanized surfaces:

Sweep-blasting to a uniform rough, grey surface is achieved.

Stainless steel and aluminium:

The substrate must be free from dirt, oil, grease and corrosion products.

Maintenance coatings:

In case of well adhering old coating systems, careful cleaning is sufficient. Loose particles must be removed, defective areas must be de-rusted to PSa 2 ½, PMa or PSt 2 and patch-primed with SikaCor® Aktivprimer Rapid.

For contaminated and weathered surfaces we recommend to clean with SikaCor® Wash.

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, colour shade 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