Typically, lightweight fill is needed for bridge approaches, landscaped fills on roof decks, and fills behind retaining walls and other areas where weak foundation soils may not support the weight of conventional backfill materials.

When used as a lightweight fill, STYROFOAM™ Brand Extruded Polystyrene Insulation can reduce the vertical compression loads on poor, compressible underlying soils – reducing or eliminating long-term soil settlements.

For product recommendations and technical assistance, contact us when you’re ready to dig in to your next geotechnical project.