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ThermalStar® Cavity Wall Insulation

Cavity wall insulation is a vital component of a building’s envelope. For building designers requiring the highest quality rigid insulation, ThermalStar® Insulation Board is a premium grade insulation manufactured to provide architects, specifiers, distributors, and contractors all the features and benefits inherent in a high-quality architectural insulation. ThermalStar Insulation Board is NFPA 285 compliant for wall assemblies and provides a stable long-term R-value that will last the lifetime of your structure.

Manufactured under an industry-leading quality control program monitored by UL and ICC-ES, ThermalStar Insulation Board meets or exceeds ASTM C578 standards, providing an HFC free, recyclable rigid insulation with a low Global Warming Potential (GWP).


  • Multiple thicknesses and compressive strengths
  • Stable, long term R-value to protect your structure for years to come
  • Minimal long-term moisture retention with the ability to dry quickly
  • High vapor permeability increases the moisture durability of the built assembly
  • Environmentally friendly with a low global warming potential and zero ozone depletion potential
  • Limited lifetime warranty for physical and thermal performance
CTA Architectural 580x387
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