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Dow THERMAX 2" x 4' x 8' Interior Exposed Sheathing Insulation

Brand: Dow Mfg#: 193545
Product#: 635193545
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THERMAX™ Sheathing is a nonstructural, rigid board insulation consisting 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. THERMAX™ Sheathing can be installed exposed to the interior without a thermal barrier. THERMAX™ Sheathing offers high, long-term R-value. Used in conjunction with the appropriate joint closure system for the application, THERMAX™ Sheathing with its low perm rating helps to reduce moisture condensation within and behind the insulation


  • Brand: Dow
  • Product Line: THERMAX
  • Water Absorption: .1 %
  • Thickness: 2 in
  • Standards: ASTM Specified
  • Material: Glass Fiber Infused Polyisocyanurate Foam
  • Temperature Rating: 250 deg F
  • Length: 8 ft
  • Width: 48 in