Conditions: 30-minute exposure, 1000°C fire, 60 kW/m² radiant heat
Result: Cladding ignited, but substrate survived at 77.4°C.
Lesson: The cladding was fire-resistant but not fireproof.
Conditions: 30-minute exposure, evolved non-combustible matrix, more fillers, stronger char
Result: Cladding peak 684°C, substrate 63.4°C. No ignition.
Lesson: Non-combustible matrix and earlier char formation solved ignition.
Conditions: 48-hour prolonged wildfire siege, 5 homes, wind, embers, v1.1
Result: All 5 homes lost substrate ignition. Heat penetrated over time.
Lesson: Fireproofing was not enough; heat blocking over time was needed.
Conditions: 48-hour prolonged wildfire siege, 5 homes, wind, embers, v1.5 full envelope with porous air pockets, phase-change cooling, stronger ground skirt, thicker thermal mass
Result: All 5 homes survived. Substrate peak 132°C, no ignition.
Lesson: Full envelope with ground skirt and phase-change cooling is the complete solution.