.png)
Wellington Builders | Design & Architecture Services | Eco-Friendly Design | High Performing Home | Structural Insulated Panels | Energy-Efficient Home
In recent years, wildfires have become an increasing concern for homeowners, especially those interested in high-performance and energy-efficient homes. A notable example is a new home that architect Greg Chasen designed in Pacific Palisades, Los Angeles, which survived devastating wildfires while neighbouring homes were reduced to ashes (see: Why these houses survived the L.A. fires - Fast Company). This resilience was due to thoughtful design choices, such as using non-combustible materials and creating defensible space around the property.
At Green Abode, we often receive inquiries about the fire resistance of Structural Insulated Panels (SIPs). SIPs are composed of an insulating foam core sandwiched between two oriented strand boards (OSB). This design not only offers superior thermal performance but also contributes to the panels' structural integrity.
When it comes to fire resistance, SIPs provide several advantages:
Reduced Air Infiltration: The airtight nature of SIP construction minimizes the oxygen supply within wall cavities, thereby slowing the spread of fire.
Consistent Performance: Unlike traditional framing, which has gaps and voids (which are filled with oxygen, fuelling fire), the uniformity of SIPs ensures predictable behaviour under fire conditions.
While no building material is entirely fireproof, SIPs have demonstrated commendable performance in fire endurance tests. The solid core of SIPs limits the pathways for fire to travel, unlike traditional stud walls, which have hollow cavities filled with oxygen, which in turn fuels the rapid spread of fire.
Comparative Fire Performance
Research indicates that SIPs can achieve fire resistance ratings comparable to traditional construction methods. For instance, a study by BRANZ (Building Research Association of New Zealand) reviewed the fire performance of SIPs and found that, with appropriate design and detailing, SIPs can meet the fire safety requirements of the New Zealand Building Code.
To enhance the fire-resistant properties of SIP homes, consider the following strategies:
Fire-Resistant Claddings: Applying non-combustible exterior finishes, such as ColorSteel Maxam and Nu-Wall, can provide an additional barrier against external fires. Nu-Wall is manufactured from solid extruded aluminium with a powder coat finish less than 1mm thick. It is considered to be non-combustible by the New Zealand Building Code.
Defensible Space: Maintaining a safe perimeter around the home by clearing vegetation and using fire-resistant landscaping can significantly reduce fire risk.
By adopting these fire-resilient design principles, homeowners can significantly increase the likelihood of their high-performance, energy-efficient homes withstanding wildfires, as exemplified by the passive house in Los Angeles.
If you're considering building a resilient, energy-efficient home, Green Abode is here to help. With our expertise in SIP construction and commitment to sustainable building practices, we can guide you through creating a home that's not only environmentally friendly but also built to withstand fire hazards.
To learn more about how we can assist you in building your dream home, please reach out to us:
Phone: 0800 368 470
Website: www.greenabode.co.nz
Let's work together to build a safe, sustainable home and tailored to your needs!
Comments