DuPont Thermax™ Sheathing

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THERMAX™ Sheathing is a high-performance, rigid polyiso insulation board with a glass-fiber-reinforced foam core and reflective aluminum facers. Engineered for exceptional fire resistance, moisture control, and long-term R-value, it can be installed exposed without a thermal barrier and is ideal for both interior and exterior continuous insulation applications, above and below grade. THERMAX™ meets the highest building code standards and is especially well-suited for rated assemblies.

For optimal installation, pair with Thermax™ Tape to seal joints and seams, improving energy efficiency and giving your project a clean, professional finish. Use Great Stuff PRO™ Construction Adhesive or DuPont™ Enerfoam to bond panels to concrete walls and fill voids for added structural integrity and moisture resistance.

When fastening to masonry surfaces like concrete or block, Plasti-Grip® PMF Plastic Masonry Fasteners offer a reliable, easy-to-use anchoring solution. Available in multiple sizes, they provide excellent holding power without thermal bridging, ensuring a secure and energy-efficient installation.

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