Hydrobit Voranstrich HV 25

Art.No. 71031

Bitumen-emulsion based primer, solvent-free for roof and basement waterproofing

Dilutable with water, Water resistant when fully dried.

  • Cold applicable
  • Very good adhesion on the subconstruction
  • Odourless
  • For inside and outside use

Intended use

  • Primer and bonding agent on concrete, light concrete, flush-jointed masonry, cement plaster or metal for roof- and basement waterproofing with bituminous membranes, as well as bituminous protective coating



The surface needs to be solid, moderate rough, clean and dry.


HYDROBIT PRIMER HV 25 has to be applied by brushing or rolling, at a surface temperature of min. +5°C. In case of multi layer application, each layer needs to be dry before the application of the next layer.


Fresh applied primer can be damaged or rather washed off due to heavy rain.



0,3 – 0,5 kg/m² per layer, depending on surface conditions


Drying time

6 - 12 hours, depending on surface conditions and temperature

Best before

Minimum 2 years storable in original, unopened, undamaged sealed packaging under frost-free conditions.

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25 kg drums