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The TRUTH About Noncombustible Construction

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Discover the difference.

Rebuilding Right: The Truth About Fire-Resilient Homes

Don’t be misled by false claims or fall prey to predatory contractors. PHNX is here to set the record straight—noncombustible homes can be built quickly, efficiently, and affordably. Our proven technology and expertise make it possible to rebuild safer, stronger communities without delay. Trust PHNX to get it right the first time.

Myth #1

The technology does not yet exist to feasibly build noncombustible homes

FACT

PHNX has developed patent-pending technology, including the PHNX Longspan™ System, that enables the efficient and cost-effective construction of fully noncombustible homes. These homes meet the highest safety standards and exceed code requirements, offering a fire-safe alternative without the use of wood in structural elements.

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Myth #2

Any concrete home is noncombustible, and any contractor can build one.

FACT

Not all concrete homes are truly noncombustible. Only PHNX builds Type I homes, ensuring a completely wood-free structure. Beware of misleading claims from contractors or materials that don’t meet strict noncombustible codes. Is there wood sheathing in the roof and floors? Wood beams? Then it's not noncombustible. PHNX’s exclusive design guarantees compliance and unmatched safety.

Myth #3

Noncombustible homes are too expensive and take too long to build.

FACT

A PHNX Home can be completed in 8–10 months—half the time of traditional construction—at a similar cost. Innovations like the PHNX Longspan™ System reduce inspections, delays, and on-site trade coordination, saving both time and money without compromising quality.

Myth #4

Home hardening methods are enough for wildfire safety.

FACT

Home hardening strategies only reduce fire risks but don’t eliminate them. Wood-framed homes, even with fire-resistant upgrades, remain vulnerable. PHNX Homes go beyond hardening, using entirely noncombustible materials to provide unmatched wildfire protection and long-term savings, including reduced insurance costs.

PHNX Longspan Roof Assembly

(patent-pending)

To learn more about how to make your next home noncombustible

Know the IBC Construction Types by Fire Resistance: 

Type I is further classified as Type IA or Type IB, with IA being the most stringent. PHNX is the ONLY company to build to Type IA standards – no others have the capability of building to Type IB or Type II, either – the other two highest levels of noncombustible standards. Why? The most challenging barrier to removing wood from the structure in residential construction, especially single-family, has been eliminating the plywood sheathing in the roof. It provides important lateral stability and there are no feasible noncombustible alternatives. This is where the patent-pending PHNX Longspan™ System comes in; our proprietary roof and floor framing system addresses the lateral stability problem and solves it, wood-free.

FIRE RESISTIVE

Highest Level

(Type I)

3 -4

Resistance Hours

 All building elements are noncombustible 

 High-rise buildings, commercial, hospitals 

 THIS IS PHNX: 

Made possible for the first time in single-family homes with our patent-pending PHNX Longspan roof assembly 

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NON-COMBUSTIBLE

(Type II)

1-2

Resistance Hours

 All building elements are noncombustible 

 Mid-rise offices, hotels, school buildings 

 This has lower fire resistance. Other contractors still can’t build a Type II single-family home structure without the

PHNX Longspan roof assembly 

ORDINARY

(Type III)

0-2

Resistance Hours

 Exterior walls are noncombustible (e.g. brick); interior structural elements may be combustible 

 Warehouses, homes 

 Many builders claim noncombustible, but traditional wood framing and wood sheathing on the roof is tinder for flying embers...

THIS IS MISLEADING 

HEAVY TIMBER

(Type IV)

0-1

Resistance Hours

 Exterior walls are noncombustible; interior is of solid or laminated wood without concealed spaces 

 Various  applications 

 Many builders claim noncombustible, but traditional wood framing and wood sheathing on the roof is tinder for flying embers...

THIS IS MISLEADING 

WOOD FRAME

(Type V)

N/A

Resistance Hours

 All building elements are combustible 

 Single-family homes 

 Traditional construction = 

FULLY 

COMBUSTIBLE 

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