Fast reacting, dual-component polyurethane resin with short reaction time even at low temperatures



WILLPUR® WS-L is a hard-elastic polyurethane resin. It cures to a dimensionally stable injection material suitable for stopping water inflows or consolidating soil and loose rock. Its low viscosity allows good penetration, allowing WILLPUR® WS-L to get into the tightest fissures, ensuring permanent consolidation. Although it is not a high foaming product, in contact with water or even just moisture, it fills smaller fissures and cracks, with the effect of secure sealing even against higher water pressure.




  • extremely fast reacting PU resin with short reaction time and high final strength
  • foams easily on contact with water
  • adaptable injection system with the addition of WILLADD® THIX and WILLADD® FAST
  • in combination with the above additives it reacts as an expanding, foaming waterstop system


  • Consolidation in dry, wet and water-bearing layers in rock or cracks in concrete.
  • Sealing against water under pressure from rock layers, dams or shaft walls
  • Stabilization, repair and sealing work in tunnels, shafts and excavations
  • Stabilization and waterproofing in sheet pile walls as well as in anchorages."


Technical DATA

Curing time at 15°C [s]:41
Foam Factor (1% water):4
Volumetric mixing ratio A:B:1:1
TDS & MSDS on request 



Tin Canisters 20lComponent A: 18 kg
Component B: 23 kg
Steel Drum 200lComponent A: 200 kg
Component B: 250 kg
Other delivery forms on request 



Dipl.-Ing. Karl-Heinz Lindenbauer

Head of Sales Civil Engineering & Mining (DACH region)

Phone:+49 231 9640 413
Mobile:+49 173 931 22 43

Dipl.-Ing. Paulo H. Tsingos

Head of Export Civil Engineering & Mining

Mobile:+49 173 940 58 40

Dipl.-Ing. Sergej Kremer

Internal Sales Civil Engineering & Mining East Europe

Phone:+49 231 9640 312
Mobile:+49 176 576 723 69
Fax:+49 231 9640 232

Peter Simon