The optimal selection depends on project safety requirements and local climatic conditions:
PU / PIR (Polyurethane / Polyisocyanurate): The undisputed leader in pure thermal resistance (λ ≈ 0.022 W/m·K). Ideal for extreme sub-zero regions, desert operations with blistering exterior heat, and applications demanding minimum HVAC energy consumption.
Rock Wool (Mineral Fiber): Essential where fire classification is non-negotiable. It is non-combustible (Euroclass A1/A2), withstands temperatures over 1000°C, and delivers superior acoustic dampening, making it the premier choice inside heavy industrial refineries, power plants, and chemical complexes.
EPS (Expanded Polystyrene): The most economical, lightweight core for moderate climates, short-term civil site offices, and temporary encampments where capital expenditure minimization is the main priority.