PANELMATE™ is an Extruded Polystyrene (XPS) Foam Insulation by STYROFOAM™ featuring moisture resistance for long-lasting thermal performance in precast concrete sandwich panel applications. The R-value (RSI) of PANELMATE Insulation products helps create concrete wall systems that are durable, strong and energy efficient. PANELMATE Insulation products are highly resistant to moisture due to Dow’s distinct extrusion process. The closed-cell, rigid plastic foam of these products is extruded with smooth, high-density skins that make both products moisture resistant. This helps maintain the products’ thermal value when subjected to the high moisture content of the concrete panel manufacturing process. PANELMATE Insulation is designed specifically for insulated precast concrete panels that require above-average thermal performance. PANELMATE™ Ultra Insulation uses patented carbon black materials in the foam for greater thermal performance over other extruded polystyrene insulations.


  • Used as the center of precast concrete sandwich panel applications


  • Resists moisture
  • Economical long-lasting thermal performance
  • Resistant to freeze-thaw cycling
  • RSI/R-Values help create concrete wall systems that are durable, strong and energy efficient
  • Smooth, high-density skins
  • Custom sizes and edge treatment available
  • Contains an average of 20% pre-consumer recycled content certified by UL Environment Inc.

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N -

North America

E -

Europe, Middle East, Africa & India

A -

Asia Pacific

L -

Latin America



Thermal Resistance Per Inch R-Value (RSI)

Compressive Strength PSI (kPa)

PANELMATE™ Insulation


5.0 (0.87)

16 (110)

PANELMATE™ Ultra Insulation


5.6 (0.97)

25 (170)