Liquid-applied polyurethane waterproofing membrane

ULTRATHANE PUD is a liquid-applied, highly permanent elastic, cold applied and cold curing, water based, one component, modified polyurethane membrane used for long-lasting waterproofing. When the ULTRATHANE PUD is applied, it forms a hydrophobic, 100% waterproof, seamless membrane without joints or leak possibilities, that protect old and new structures efficiently and on a long-term basis.


  • Waterproofing of roofs.
  • Waterproofing of balconies and terraces.
  • Waterproofing of decks.
  • Waterproofing of wet-areas (under tile).
  • Waterproofing and protection of concrete constructions.
  • Waterproofing and protection of drywall and cement-boards.
  • Protection of polyurethane foam insulation.


Specific weight UNI EN ISO 2811-1 1.34± 0,02 g/ml
Appearance Viscious liquid
Solid content EN ISO 3251 >66
Tensile strength UNI EN 12311-2 >1.5 N/m2
Elongation at failure UNI EN 12311-2 >.400%
Adhesion to concrete EN 1542 >1.5 N/mm2
Resistance to water pressure No Leak (1m water column, 24h)
Chemical resistance Good resistance against alkali
Shore A Hardness EN ISO 868 >70
Capillary absorption and permeability to water EN ISO 1062-3 < 0.1 kg/m2 ∙ h0.5
Crack bridging EN 1062-7 Upto 2,00mm
Pedestrian traffic (allowed) Medium traffic
Tack free time 6-12 Hours / 20°C / 50% RH
Light pedestrian traffic time 18 Hours / 20°C / 50% RH
Final curing time 7 days / 20°C / 50% RH
Flash point Non-flammable