10/29/2023 0 Comments Cmu block fire wall r value![]() 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.ĭuPont™ Thermax™ Brand insulation delivers wall performance you can count on. DuPont™ Thermax™ Brand insulation delivers wall performance you can count on. The glass fiber reinforcement contributes to improved fire performance and dimensional stability. It consists of a glass-fiber-infused polyisocyanurate foam core laminated between 1.0-mil smooth, reflective aluminum facers on both sides. 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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