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, and the relative humidity must be below 80%. 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.
Metal substrate or ceramic tile
Metal surfaces must be blast-cleaned to an adequate level. Ceramic tiles must be firmly bonded to the substrate. The tile surface should be roughened by grinding the glaze. On tiled substrates, an overfill/levelling layer with acrylic mortar is recommended to prevent tile joints from showing through the finished coating.
Mixing
Pre-mix the required amount of Nanten Acrylic 216. 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 5 wt-%
Coverage
In a 3–4 mm thick broadcast coating system, resin consumption is approx. 1.6 kg/m² and filler sand consumption is approx. 6 kg/m² (mixing ratio approx. 1:3 by weight and 1:2 by volume). Colored quartz sand is used as filler.
Application instructions
Trowel-applied coating is applied on a substrate primed with Nanten Acrylic Primer 101 or 107. Thoroughly mixed Nanten Acrylic 216 and the selected filler sand blend are poured onto the floor in a bead and applied with a roller to the desired layer thickness.
In the broadcast method, the selected filler sand is scattered onto the wet acrylic. The acrylic is fully saturated with sand, and after curing, excess sand is removed by brushing. Nanten acrylic trowel coatings are sealed with the Nanten Acrylic Sealer 304 or Sealer 319 topcoat, depending on the requirements of the intended use environment.
Commissioning
Recoatable after approx. 60 minutes. Fully loadable after approx. 2 hours.
Storage and handling of waste
See the separate storage and disposal instructions https://www.fescon.fi/en/material-bank