PortalWall® WDSA™ | Water Draining Spandrel Assembly - the PATH TO EXTREME ENERGY EFFICIENCY & WELLBEING VIA WATER VAPOR ALOFT™
MC²™ — 2 Major Components™ — is the result of a disciplined effort to eliminate unnecessary parts and elevate the two major components essential to achieving WVA™ — Water Vapor Aloft™, the manifestation of wellness and a signal that the building enclosure is performing as intended: eliminating unwanted air and vapor exchange while delivering exceptional energy conservation.
The PortalWall® WDSA™ (Water Draining Spandrel Assembly) embodies this philosophy. By integrating MC²™, the WDSA™ achieves continuous OutSulate™ performance through a flat aluminum diaphragm that replaces conventional vertical framing. This uninterrupted layer eliminates thermal bridges, stabilizes surface temperatures, and promotes uniform moisture control across the building envelope.
The WDSA™ represents more than innovation — it is heritage refined. Both of its major components, the extruded aluminum framework and the flat aluminum diaphragm, have been proven through centuries of architectural application. Each carries a legacy of durability, precision, and adaptability. Together, they form a modern enclosure assembly that is time-tested, materially efficient, and inherently stable.
Through this integration, the WDSA™ delivers the essential performance attributes of the PortalWall® system:
• Thermal Continuity: Eliminating conductive paths that compromise insulation.
• Moisture Stability: Supporting Water Vapor Aloft™ for healthy interior conditions.
• Structural Integrity: Achieving rigidity through simplification, not addition.
• Energy Conservation: Reducing unwanted air and vapor exchange for measurable efficiency gains.
The PortalWall® WDSA™ is not an experiment — it is the evolution of proven materials into a unified system that defines the next generation of energy-efficient, wellness-driven façade design.
PortalWall® PARALLELS™, Patent Pending, is the latest innovation within the GEN3 horizontal aluminum extrusion platform, scheduled for release in early 2026.
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