We recommend using a foam painter's roller (foam roller, lacquer roller, lacquer roller) to apply our stone and concrete seals, as this is the easiest way to ensure that the surface is evenly wetted.
The sealant should be applied crosswise until the surface is saturated.
Excess material that the surface does not absorb (puddles) should be picked up and rolled out immediately, as this could lead to slight darkening.
The advantage of this method compared to the spraying is
a) in the more controllable uniform distribution and wetting of the surface
b) in the material savings, since especially in the outdoor area some material 'evaporates' due to the wind and also in the area of the outer edges and joints material is lost.
Of course, the surface must be thoroughly cleaned with a residue-free cleaner before application and then completely dried.