AP Fill 700: Shut Down Gushing Leaks

Fill Voids Behind Concrete Structures


Void Filling Product Button Concrete Void Filling Product Button 2 700 SDS
Water activated semi-rigid polyurethane foam injection resin. Word document with specifier notes available.


Single component, water activated, hydrophobic, low viscosity, closed cell polyurethane injection resin. As the ideal leak seal for cutting off high-flow, underground leaks, AP Fill 700 is a proven polyurethane leak stopper and void filler for all types of concrete structures. Also see our AP Seal 500 Concrete Crack Sealant.


  • Cutting off high flow leaks.
  • Concrete void filling for all types of structures.
  • Cutting off underground water flows.
  • Consolidating loose soil.
  • Filling voids under concrete slabs.


  • Very low viscosity.
  • Water impermeable polyurethane resin.
  • Adjustable set time – as fast as 20 seconds.
  • Injected as a single component.
  • Phthalate free available (more environmentally friendly).
  • Certified To NSF 61-5 (approved for contact with drinking water).

Available in Pails


Available in Drums


Available in Totes



  • AP Cat 106 (Regular Speed)
  • AP Cat 107 (Fast Speed)
  • AP Flush 121


For efficient concrete void filling, it is recommended to use AP Fill 700 with a single component airless sprayer.