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Amatrium Materials AI
DuPont Styrofoam™ SM Extruded Polystyrene Foam Insulation
Categories: Polymer; Thermoplastic; Polystyrene (PS); Expanded Polystyrene (EPS)

Material Notes: STYROFOAM™ Brand SM Extruded Polystyrene Foam Insulation is a multi-purpose extruded polystyrene board that helps to meet the needs of the commercial and residential foundation and slab market. The closed-cell structure of STYROFOAM™ Brand SM Insulation resists water absorption, enabling it to retain a high R-value (RSI) over time – a necessaryproperty in below-grade residential foundation applications.

STYROFOAM™ Brand SM Insulation helps to protect foundation dampproofing and waterproofing, especially during backfilling. It also provides a secondary barrier against groundwater leakage. With STYROFOAM™ Brand SM Insulation, the freeze-thaw cycling of the foundation wall is minimized, reducing the possibility of cracking. And a warmer foundation wall reduces the potential for condensation and adds to the thermal mass of the building.

This material is produced as sheets of closed-cell foam by a continuous extrusion process. Its properties will be different than expanded polystyrene beads because beads have voids between cell walls.

This former Dow product line is now a DuPont product line.

Key Words: Foundation and Underslab
Available Properties
  • Water Absorption, ASTM C272, volume%
  • Water Absorption, ASTM D2842, volume%
  • Compressive Strength, ASTM D1621
  • CTE, linear, ASTM D696
  • Insulation R Value, Standard Size (Imperial)
  • Insulation R Value, Standard Size (Imperial)
  • Insulation R Value, Standard Size (Imperial)
  • Insulation R Value, Standard Size (Imperial)
  • Insulation R Value, Standard Size (Imperial)
  • Insulation R Value, Standard Size (Imperial)
  • Insulation R Value, ASTM C518, Standard Size (Imperial)
  • Maximum Service Temperature, Air
Property Data

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Manufacturer Notes:
DuPont Packaging and Industrial Polymers

Category Notes

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