XPS foam Board/Sheet: 1.Waterproof,Anti-fire,Heat insulation 2.Color:blue,white,yellow 3.Thickness:20-100mm 4.Max width600mm About ... )(25 centi degree)Dimensional stabilityMaximum 1.5%ColorGrey, white, blue, yellow, etc.Burning behaviorUp to B2 degree (Oxygen Index≥26)About ... , sandwich boards, frost protection layers for buildings and transportation routes yellow extruded polystyrene (XPS) foam