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waterproofing line


High-density hydrophilic waterstop based on sodium bentonite pre-gel
Rectangular cross section (12x25 mm)

RAWSEAL CJ1225 is a hydro-expansive waterstop based on sodium bentonite pregel. RAWSEAL CJ1225 is quick and easy to use to waterproof cold joints and above-ground pipes even where there is groundwater impurity and salts that inhibit expansion in conventional systems based on dry granular bentonite.

10-m box (10 1-m-long profiles)


  • It is safe and easy to secure.
  • It provides flexibility and adhesion to support surfaces due to the plastic consistency of its profiles.
  • It is waterproof on-site.
  • It provides expansion and tightness whatever the composition of the water it comes in contact with.

It is ideal for:

  • Cold joints on horizontal slabs of standard and reinforced concrete with a minimum thickness of 10 cm.
  • Cold joints on vertical slabs of standard and reinforced concrete with a minimum thickness of 12.5 cm.
  • Hydraulic insulation of above-ground pipes




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