5121 Winnetka Ave North, Suite 130, New Hope, MN 55428

763.208.2266 | 800.245.1391 | (FAX) 763.208.2366

Thermax

Thermax

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.

 : Data  : .50" SDS  : .75" SDS  : 1" SDS  : 1.5" SDS  : 2" SDS

We stock the following:

  • 1/2" x 4' x 8'
  • 3/4" x 4' x 8'
  • 1" x 4' x 8'
  • 1 1/2" x 4' x 8'
  • 2" x 4' x 8"
  • 2 1/2" x 4' x 8'
  • 3" x 4' x  8'