Base requirements and coating conditions
The concrete must have a minimum strength class of C25/30 and wear resistance class 3. The relative humidity of the concrete must not exceed 95%, and the surface temperature must be at least +3°C above the dew point. Good ventilation must be ensured during application. Odours generated during the work can be reduced by using negative pressure ventilation.
New concrete floor
Cement laitance and any uncured cement must be removed by surface grinding or shot blasting. All loose and adhesion-reducing material must be removed, and cement dust must be carefully vacuumed off.
Old concrete floor
Cement laitance and deteriorated concrete must be removed by grinding or shot blasting. All loose and adhesion-reducing material must be removed, and the surface must be thoroughly vacuumed. Dirty floors should be washed and rinsed with a synthetic detergent before any further surface preparation. Any existing old paint film must be completely removed from the substrate.
Asphalt substrate
The substrate must be clean and dry. A test application of the primer is recommended to ensure that the selected product does not soften the bitumen.
Mixing
Pre-mix the desired amount of Nanten Acrylic Primer 101. Assess the effect of temperature on the required amount of hardener and add the hardener to the mixing container. Continue mixing for approximately two minutes.
Mixing ratio
Nanten Acrylic Hardener is used as the hardener, and the required amount depends on the working temperature.
1 dl of hardener = 64 g
+30°C 1 wt-%
+20°C 2 wt-%
+10°C 4 wt-%
+3°C 6 wt-%
Application instructions
The thoroughly mixed Acrylic Primer 101 is poured onto the floor in a bead and applied using a roller or rubber squeegee. While the primer is still fresh, texturing sand (grain size <1.5 mm) is broadcast progressively to improve the workability of the coating and ensure proper adhesion. The primer must seal all pores in the concrete and form a continuous, dense, and intact film.
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