Sika 3 quartz top mineral dry shake floor hardener Usage Dependent on the conditions, remove the surface bleed water or allow it to evaporate. Sprinkle Sikafloor-3 QuartzTop onto the screeded concrete evenly in 2 stages (first stage: ~3 kg/m2; second stage: 1–3 kg/m2). Care must be taken to apply the product without creating ripples etc.