Waterproofing Membrane Underneath Ceramic Floor Coverings

VELOSIT DB 840 is a watertight, crack bridging waterproofing membrane used for surface waterproofing underneath tiles.

Typical applications:

  • Exterior and interior
  • Waterproofing underneath ceramic coverings for W0-I to W2-I acc. DIN 18534 and according to the load classes A and C
  • Waterproofing membrane on terraces, balconies and patio decks acc. DIN 18534-5
  • Waterproofing of the wall-slab joint
  • On heated and non-heated screeds


  • Covered with a geotextile on both sides
  • High tear resistance
  • Water vapor reducing with a good adhesion to cementitious thin set adhesives and liquid waterproofing materials
  • Ideal for fast track waterproofing
  • Uniform thickness m
  • Very low emissions - EMICODE EC1 PLUS


Here you can find detailed information about the selected VELOSIT product.

Technical Data Sheet

Associations & Memberships:

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