PortalSteel™ & PortalFlow™ part of the PortalWall® family, a family trying hard to remain cohesive and viable.
PortalSteel™ is positioned on the dry side of the exterior wall, serving a dual function as both structural reinforcement and an airflow promoter, PortalFlow™. Originally conceived and first built in my own home, the system enables controlled airflow—which can include warmed air—to elevate surface temperatures above the dew point.
This dynamic extends the mechanical boundary into the interstitial space, delivering a non-obvious performance benefit: it helps to elevate hidden surfaces above moisture thresholds, keeping them dry, reducing condensation risk, and ensuring that mold risks are substantially averted. Importantly, this is achieved **without losing any usable space—a premium in all zones—**preserving both design flexibility and efficiency.
These principles were first published in my USPTO filings and granted patent, Figure 9B, and carried forward in subsequent filings, where they remain fully documented.
Because PortalSteel™ remains on the dry side, the metal does not need to be painted, as the area is inherently protected. Still, in pursuit of added durability, I engaged Structural Processing, a long-time vendor I have worked with since the early stages of my career, to produce a mock-up sample with an additional painted coating layer. In fact, I have proof of when I engaged with Sherry Rosenblatt.
I sent Cristina Paduano of B-FLUID the sample that I had painted by Sherry Rosenblatt. That is how we have the B-FLUID CFD Analysis.
It was my own thought, intended to be my own initiative—not that of any licensee, or outside party—to further propose integrating anti-mold growth ingredients directly into the Structural Processing or any commercial painter. This enhancement can be incorporated without incurring added design costs, lab costs, thinking about it costs, fake invoices about time invested costs, it was a simple additional step, offering an extra safeguard while retaining the inherent simplicity of the system.
PortalSteel™ by PortalWall® demonstrates how thoughtful design—grounded in science and strengthened by trusted manufacturing partnerships—delivers structural resilience, air-driven performance, and healthier buildings.
—Yonatan Zvi Margalit
Sole Inventor & Exclusive IP Owner
CFD ANALYSIS
The additional cost to implement PortalWall® is not in materials—it's in mindset. Exchanging just one part for another.
PortalWall®
The part of the building academia overlooked — the space between surfaces. Water Vapor Aloft™ is what happens when the enclosure performs as intended:
vapor remains suspended, latent energy is harvested, people feel well, and energy efficiency reaches its extreme.
I took the most basic AAMA metric — the Condensation Resistance Factor (CRF) — and built an entire new envelope science.
PortalWall® Thoughtful Design
By Yonatan Zvi Margalit