Joint Sealing Tape

VELOSIT DB 830 is a waterproof joint sealing tape used for waterproofing of construction and expansion joints.

Typical applications:

  • Waterproofing of construction joints between different concrete pours
  • Waterproofing of cracks
  • Waterproofing of pipe penetrations
  • Waterproofing of the wall-slab joint
  • Waterproofing of expansion joints
  • Waterproofing of interfaces between substrates with different expansion behaviour


  • > 300 % tensile elongation
  • Minimal thickness makes it an especially suitable substrate for tile applications
  • Resists 50 m (160 ft.) water pressure acc. to EN 12390-8
  • Good chemical resistance against many typical media
  • UV stable
  • References


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