Fire retardant cores are self-extinguished Expanded Polystyrene (EPS) and Polyurethane (PU). For clean room, EPS with density of 15kg/m≥ and 50 or 75mm thickness are usually used. PU with density 38-40kg/m≥ is more popular to be used in commercial cold room between 4-36m≤ while for industrial cold room or food processing plant more than 36m≤, EPS is more suitable due to the rigid construction. |