WITHIN-WALL™ CAVITY (WWC™)
A PortalWall® Construct
Optimal Humidity. Zero Condensation. Mold Risk Eliminated.
Finally Possible.
Buildings cannot safely include controlled humidification.
The risk of hidden condensation — and resulting mold — inside conventional wall enclosures made it impossible.
PortalWall® was designed to change that.
What It Is
The Within-Wall™ Cavity (WWC™) is a proprietary, pressurized cavity formed within the PortalWall® system.
It stabilizes water vapor, prevents interstitial condensation, and eliminates mold risk by design — while enabling Latent Energy Aloft™ (LEA™) safely and quietly.
The wall itself becomes an intelligent, governed environment.
What It Enables
- Optimal indoor relative humidity (RH)
- Condensation-free wall assemblies
- Mold risk eliminated inside the enclosure
- Quiet, low-turbulence fresh-air delivery
- Future-ready humidification
- Healthier sleep, skin, and breathing
- Wellness features that sell residences
What was once “too risky” is now achievable.
Why It Matters
All home buyers expect environmental excellence.
People assume their homes will be safe, dry, and healthy—without hidden risks.
Marketing teams need wellness they can stand behind.
Not trends. Not promises. Systems that perform quietly, year after year.
Engineers require systems that do not fail inside walls.
Because when walls fail, everyone pays—occupants, owners, and cities alike.
WWC™ makes all three align.
From Insight to System
In 2019, during a NYSERDA competition, inventor Yonatan Zvi Margalit recognized that the future wasn’t just a better wall — but an active one.
A stagnant wall becomes mechanical real estate.
Patents were filed.
The system was built.
The Result
Optimal humidity is now possible in New York luxury residential buildings — safely, repeatably, and at scale.
With condensation controlled and mold risk eliminated by design.
PortalWall®
Architecture as a First Fuel™
Invented by Yonatan Zvi Margalit
