Extruded Polystyrene (XPS)

Benefits of Solstice GBA in XPS Insulating Foam

Improve Insulation Value of XPS Board

XPS rigid insulation uses an extrusion process with polystyrene, a foam blowing agent, and other materials. XPS is an excellent insulator, inhibits mold / mildew growth, may be used below grade, and is used in many commercial and residential construction applications.

  • Solstice® GBA for XPS
  • Foam Performance
  • Case Studies
  • Brochures

Solstice GBA is ideal for XPS insulation used in residential and commercial construction. It replaces HFC-134a and other fluorocarbon and non-fluorocarbon foam blowing agents.

Benefits of Solstice GBA for XPS include:

  • Increases insulation value of XPS foam. This can translate into thinner panels required to achieve desired performance, or higher thermal insulation value with the same thickness.
  • Long term insulation performance is 7% better than HFC- 134a; 26% better than CO2
  • Nonflammable (ASTM E-681, EU A11) (unlike other gaseous blowing agents or hydrocarbon alternatives, which require flammability handling equipment).
  • Low Maximum Incremental Reactivity (MIR)
  • Low Photochemical Ozone Creation Potential (POCP)
  • Global Warming Potential (GWP) < 1, even lower than CO2
  • VOC-exempt (U.S. EPA)

XPS Foam Performance

20-25% Better Long-Term Lambda Than CO2-Blown XPS

Solstice® Gas Blowing Agent allows extrusion of thick, dimensionally stable planks with lambda values of 27mW/m.K or lower (per EN 13164 Annex C) depending upon machine configuration and co-blowing agent used.

Solstice GBA demonstrates:

  • Good thermal and mechanical performance
  • Lambda: 20-25% improvement vs. CO2 and similar to HCFC-142b and HFC-134a
  • Capability to extrude thick foam without capital investment
  • Capability to extrude low density foam
  • Compressive strength similar to HFC-134a
  • Dimensional stability similar to HFC-134a