PermaHaven™ — Patent Pending Building System
PermaHaven™ — Patent
Pending Building System.
A platform-based building system that brings engineering, manufacturing, construction, and long-term performance together into one repeatable process
What is PermaHaven™?
Not a product. A platform.
PermaHaven™ is not one material, one feature, or one upgrade. It is SteelHaven's integrated approach to residential construction. The system coordinates the parts of the home that usually get treated separately: structure, air sealing, insulation, slab strategy, ventilation, sequencing, and inspection readiness.
Patent Pending
One proprietary system. Three ways it matters.
PermaHaven™ is SteelHaven's patent-pending building system: a cold-formed steel, factory-panelized structure, a high-performance envelope, and a documented installation sequence that repeats home after home.
"Patent pending" means SteelHaven has filed a patent application for the system with the U.S. Patent and Trademark Office. It is under review and has not yet been granted.
For buyers
A steel structure that won't warp, rot, or feed termites, wrapped in continuous insulation and sealed tight. Fewer construction variables means fewer surprises after move-in.
See The DuoFor trades
Panels arrive factory-assembled and labeled. You install a defined scope in a defined sequence: no field framing, no redesign, no guesswork.
Apply for a Try OutFor municipal review
Engineered assemblies, a documented install sequence, signed hold points, and photo documentation at every stage. Inspection-ready details that repeat home after home.
Talk to our teamThe system, in four parts.
Each card links to its own dedicated page so visitors can go deeper on the part of the system they care about most.
Platform-Based System
01What "platform-based" actually means — and how it's different from traditional field-built construction, where every home is reinvented on-site.
Reduced Risk & Variability
02Fewer field decisions through engineered assemblies, disciplined sequencing, and defined inspection checkpoints at every stage of the build.
Built for Long-Term Performance
03Beyond energy efficiency — durability, moisture management, air sealing, structural integrity, and what that means for long-term ownership.
Precision Engineering
04Digital modeling, structural engineering, coordinated trade layouts, and disciplined documentation behind every SteelHaven home.
The Five Pillars of PermaHaven™
- 01Platform
- 02Engineering
- 03Manufacturing
- 04Construction
- 05Performance
Performance starts
below the floor.
The PermaHaven™ sub-slab approach is designed to help passively mitigate soil gas before it enters the home while also contributing to thermal insulation, vapor control, and air sealing strategy.
One material. Multiple performance benefits.
From Engineering to Move-In
- 01Engineering
- 02Manufacturing
- 03Foundation
- 04Panel Installation
- 05Roof Structure
- 06Mechanical Systems
- 07Inspections
- 08Move-In
Case Study
Tested under real buyer conditions.
The Duo provided SteelHaven with a real-world opportunity to evaluate how the PermaHaven™ sub-slab strategy performs after construction.
Designed to meet modern energy, durability, and compliance standards from day one.
0.3 pCi/L
The Duo buyer test result
0.4 pCi/L
Typical outdoor radon average
1.3 pCi/L
Average indoor U.S. radon level
4.0 pCi/L
EPA action level
Buyer clarity
The point is not a single test. The point is the system.
SteelHaven does not claim that any home is radon-free. Testing is still the only way to know the radon level in a specific home at a specific time.
The point is that SteelHaven designs the home to manage risk earlier, below the slab, inside the envelope, and through balanced ventilation.
Frequently Asked Questions
What makes PermaHaven™ different?
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PermaHaven™ coordinates engineering, manufacturing, construction, and performance into one repeatable system, instead of leaving each home to field-built variability.
Why cold-formed steel?
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Steel framing holds tighter tolerances than wood, doesn't warp, rot, or attract termites, and won't shrink or swell with moisture over time. That precision is what lets PermaHaven™ be manufactured and assembled the same way, home after home, instead of re-solved on-site each time.
Is it more expensive?
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Costs vary by project and site. PermaHaven™ isn't built to be the cheapest option — it's built to reduce the hidden costs that usually come from delays, field errors, and rework, so the total cost of ownership is more predictable over time.
How is it insulated?
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The building envelope combines continuous exterior insulation with closed-cell spray foam for air sealing, paired with an insulated slab strategy below grade. Together they create a tighter, more consistent envelope than typical batt-insulation framing.
What does Patent Pending mean?
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SteelHaven has filed a patent application covering the PermaHaven™ system with the U.S. Patent and Trademark Office. "Patent Pending" means the application is under review — it has not yet been granted.