The sealing sludge is to be applied in at least two operations in the prank or filler process. The second and the following work can be carried out if the first step can no longer be damaged by walking or further application (approx. 4-6 hours at +20 ° C/60 % relative humidity). A uniform layer thickness is reached when using a smoothness cellar with rectangular toothing (tooth 4 or 6 mm) and subsequent smoothing. Order strengths of more than 2 kg/sqm in one work are to be avoided, otherwise due to the high In domestic water containers, temperatures around +10 ° C to +15 ° C can usually be expected. In order to ensure complete hydration of the cement, the coating must be kept and protect against drying out for a long time for a long time and protect them. For this, 7 days are generally s.