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Water -soluble mastic is dissolved by hot water, mixed and then applied with a soft hair with a brush or brush on a parquet. Water -soluble mastic should not accumulate in the recesses of the parquet — this will lead to the appearance of stains on the floor after its drying. 2-3 hours after the full cover of the parquet floor with mastic, the remaining clots of the composition must be removed from its surface.