DuPont Thermax Sheathing

DuPont Thermax Sheathing

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.

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Product Description

DuPont Thermax Sheathing 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.

Features & Benefits

  • Easy to cut, handle, and install
  • Moisture resistant. Reduces the potential for condensation within the wall assembly (SH-533)

Physical Properties
                                                                           Method                                     Unit                                           Value
Compressive Strength                                    ASTM D1621                             Psi, min (kPa)                          25 (170)
Water Absorption                                            ASTM D2842                             –                                                3.5
                                                                          ASTM C209                               % by volume, max.                  0.1
Water Vapor Permeance                                ASTM E96                                  perm, max (ng/Pa-s-m2)        <0.03 (<15)
Maximum Use Temperature                           –                                                   °F                                             250
Flexural Strength                                            ASTM C203                                 Psi, min (kPa)                         40 (275)
Tensile Strength                                             ASTM D1623                               Psi, min (kPa)                         24 (170)
Dimensional Stability                                    ASTM D2126                                %                                              0.2


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General Insulation Company Inc. is an insulation supplier / insulation distributor that stocks and fabricates a wide variety of industrial and commercial air barrier, vapor barrier, moisture and water barrier products for the construction market.

DuPont Thermax Sheathing Technical Data Sheet

DuPont Thermax Sheathing Safety Data Sheet

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