Expanded (EPS) polystyrene fill, with compressible properties to protect grade beams, structural slabs, pile caps and other concrete structural elements from the forces of swelling of clay soils or freezing of subgrade materials and subsequent uplift.

Recommended maximum concrete placing loads:

  • DYNAFLEX High Density: 95 kPa (4.0 m concrete thickness)
  • DYNAFLEX Medium Density: 60 kPa (2.5 m concrete thickness)
  • DYNAFLEX Standard Density: 35 kPa (1.5 m concrete thickness)

We stock various sizes of Dynaflex Void Form

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