Stratathane ST-520 1 Gallon


  • A two-stage reaction takes place when ST-520 comes in contact with water. The mixture first expands and thickens.
  • As it cures, ST-520 quickly solidifies into a strong impermeable water barrier in just minutes.
  • Hydrophyilic ST-520 foam expands up to ten times its starting volume.
  • A dense material is preferred for most applications.
  • Greater density is obtained by controlling grout placed relative to void space and static head pressure.
  • ST-520 is rated high in its ability to tolerate freeze-thaw, wet-dry cycling, extrusion, and compression.


Technical Data Sheet

Safety Data Sheet

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