PORTALWALL® WATER DRAINING SPANDREL ASSEMBLY - PORTALWALL® AIR™

 July 25, 2025 – THERM Analysis Summary

A full thermal analysis conducted with LBNL’s industry-standard THERM software confirmed that the PortalWall® assembly exhibits zero condensation risk under design conditions.

Even at outdoor temperatures as low as 0°F, interior surface temperatures remain well above the dew point — ensuring dry, mold-resistant performance.

This superior result is driven by the system’s underlying thermal logic:

• Flat-sheet diaphragm — replaces conventional vertical framing, absorbing and distributing energy uniformly.
   
• No vertical framing members — eliminating weak points typical of conventional façades.
   
• Continuous Outsulate™ capability — the flat diaphragm creates a robust plane for uninterrupted exterior insulation.
   
• Integrated heat sink and insulation layers — strategically placed to balance energy and moisture.
   

The result: a high-performance enclosure that manages energy and moisture with exceptional reliability — and provides visible proof that wellness and efficiency can coexist in one wall system.