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Shut Down Gushing Leaks

Spetec PUR H100 is a one-component, closed-cell, hydrophobic, water-reactive, solvent and phthalate-free, low viscosity resin. It’s most commonly used for stabilization and cut-off of large water leaks. For similar products, see the page on Leak Seal.

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Polyurethane Leak Sealing Explained


  • Water cut-off of large flow and high pressure water leaks.
  • Water cut-off of water leaks in foundations such as diaphragm walls, piling sheets and secant piles.
  • Stabilization and water cut-off of large cracks, voids and gravel layers.
  • Pre and post injections in mines, tunnels, pipe jacking, drill & blast and TBM applications.
  • Injections in combination with cement-based grout.
  • Crack and gravel layer injections in concrete structures.
  • Soil stabilization and anchors in porous geology.
  • Water cut-off of sewer water leaks and sewer stabilization.
  • Probe grouting for below grade pipes.
  • Manhole injections.


  • One component.
  • Different reaction times are possible by adjusting the percentage of GEN ACC Accelerator.
  • The closed-cell structure of cured polyurethane ensures permanent sealing of cracks and joints.
  • Cured polyurethane exhibits high strength and good chemical resistance (contact our Technical Service for chemical resistance).
  • Cured polyurethane is harmless for the environment and resistant to biological attack.
  • Certified To NSF 61-5 (approved for contact with drinking water).