Rigid Board Stock Types

Expanded Polystyrene (EPS)
  • 1.5 Perm
  • 4.5 R-Value per Inch
  • Less Expensive
 Extruded Polystyrene (XPS)
  • 3.0 Perm
  • 5.5 R-Value per Inch
  • Higher Compressive Strength

NAIMA - Insulation Installers Course - Module 1.2.169.jpeg

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