Engineered for both concealed and exposed applications, DuPont™ Thermax™ Sheathing is an easy-to-use nonstructural rigid insulation board with a fiberglass-infused foam core that helps improve fire performance and dimensional stability.
DuPont™ Thermax™ Sheathing is a multipurpose, nonstructural, rigid board insulation that is quick and easy to install in a wide range of exposed and concealed cavity wall applications. It consists of a glass-fiber-infused polyisocyanurate foam core laminated between 1.0-mil smooth, reflective aluminum facers on both sides. The glass fiber reinforcement contributes to improved fire performance and dimensional stability. DuPont™ Thermax™ Brand insulation delivers wall performance you can count on. It’s ready to meet your toughest building challenges – both outside and inside the wall – with a robust ISO insulation product line and an R-value that’s proven consistent over time and a range of temperatures.
DuPont™ Thermax™ Brand insulation delivers wall performance you can count on. It’s ready to meet your toughest building challenges – both outside and inside the wall – with a robust polyiso insulation product line and an R-Value that’s proven to be consistent over time and a range of temperatures.
Standard Thermax™ insulation board dimensions are 4'x8'. Custom lengths are available up to 30'. Please contact your local DuPont representative for additional availability details or call our product support team at 1-833-338-7668
|Easy to cut, handle, and install||
|Use in exterior and interior applications||
|Seal with DuPont™ LiquidArmor™ and DuPont™ DuraGard™ CM||
|Long-term thermal resistance||
|R-Value (Thermal Resistance at 75°F Mean Temperature)<sup></sup>||ASTM C518||ft2•hr•°F/Btu||6.9|
|R-Value (Thermal Resistance at 40°F Mean Temperature)<sup></sup>||ASTM C518||ft2•hr•°F/Btu||7.2|
|Compressive Strength<sup>3</sup>||ASTM D1621||Psi, min (kPa)||25 (170)|
|Water Absorption<sup></sup>||ASTM C209||% by volume, max.||0.1|
|Water Vapor Permeance<sup></sup>||ASTM E96||perm, max||<0.01|
|Flexural Strength<sup></sup>||ASTM C203||Psi, min (kPa)||40 (275)|