Liquid Waterproofing Membrane

VELOSIT DF 941 is a solvent-free one component waterproofing membrane for all typical construction substrates like gypsum boards, anhydrase and cement screeds, concrete and masonry. It is a good substrate for dispersion based and cementitious tile adhesives. It is crack bridging, watertight and compatible with silicone sealants.

Typical applications:

  • Waterproofing of bath rooms and showers
  • Waterproofing behind tile backers in kitchens
  • Internal waterproofing for water load classes W0-I to W3-I on walls and W0-I to W1-I on floors acc. DIN 18534
  • Waterproofing in combination with tiles and natural stones
  • Available in gray and blue for easier control of application thickness


  • Ready-to-use
  • Crack bridging
  • Very flexible, tensile elongation > 100%
  • Easy to apply
  • Fast curing
  • Watertight acc. to EN 13390-8
  • Open to foot traffic after 3 – 4 hours (23 °C/60 % r.h.)
  • Ready for water pressure after 5 days
  • Very good adhesion to concrete and masonry


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

Technical Data Sheet Safety Data Sheet

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