Hydra Stop 300 Hydrophobic Polyurethane Foam 300 cc x 300cc

 @ $168.00



Hydrophobic urethane foam reacts on contact with water in a concrete crack to expand and foam.  A closed cell foam is created that stops water leaks through a basement wall crack.  The final product is flexible and will not shrink in volume.

Single component

300 cc x 300cc cartridge

Uses 824 (1/4" x 24 element static mixer)

Cured Hydra Stop 300


Hydra Stop 300 forms a closed cell flexible foam to stop water penetration.  The expansion is up to 30x the intial volume.


  • Single component formula
  • Very low viscosity
  • Reacts with water to foam
  • Repairs concrete cracks
  • Stops water leaks
  • Closed cell foam
  • Hydrophobic urethane
  • Shrink free
  • Reuse unused materials
  • Mixes 1:1
  • 300cc x 300cc cartridge

Where to Use

  • Concrete foundation wall cracks
  • Concrete basement wall cracks
  • Concrete retaining wall cracks
  • Concrete swimming pools