Board · 10–25 mm
Panelised — indicative fig. C·38
Gypsum3based boards with micro-encapsulated PCM to increase thermal mass and stabilize indoor temperatures.
01 Physical
Density 750-900kg/m3
Specific gravity 0.24-1.2
Water absorption < 2%
UV resistance Requires protection
Chemical resistance Good
pH tolerance 5-9
02 Mechanical
Compressive strength 4.3-5.4MPa
Impact resistance Low
03 Thermal
Thermal conductivity 0.139-0.77W/m·K
Specific heat 2000-8772J/kg·K
Thermal expansion 5-12×10⁻⁶/°C
04 Compliance & Fire First question
Ignition temp > 200°C
Flame spread index 0-25
Smoke dev. index < 450
05 Sustainability & Health
Recyclability 0%
Recycled content 0-100%
Renewable content 0-100%
Toxicity rating Non-toxic
LEED contribution EA credits
06 Durability · Cost · Logistics
Expected lifespan 50+
Maintenance interval None
Warranty period 10
Material cost (range) 55-110
Material cost (per unit) 220-880
Lead time 4-8 weeks
Annual maintenance 0
Market availability Limited
07 Assessment
Advantages
- Lightweight alternative to conventional thermal mass
- Passive temperature regulation without mechanical systems
- Reduces HVAC cycling and energy consumption (25-35% savings)
- Improves thermal comfort and reduces temperature swings
- Suitable for retrofit applications
- No maintenance required
- 100+ year thermal performance lifespan
- Can achieve specific temperature set points
Constraints
- High initial cost ($55-110/m² vs $10/m² for insulation)
- Requires sufficient diurnal temperature variation for recharge
- Limited effectiveness in high humidity climates
- No Australian fire test data (AS1530.4)
- Performance Solution required for NCC compliance
- Limited local availability and expertise
- Not recognised in NatHERS assessments
- Potential for PCM leakage if damaged
08 Applications
A1 Ceiling thermal mass in commercial offices
A2 Passive cooling in school classrooms
A3 Lightweight building retrofits
A4 Modular and prefabricated construction
A5 Heritage building thermal upgrades
A6 Passive house projects
A7 Hot spot mitigation in offices
A8 Solar gain management in walls
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.