The core materials that can be used are expanded polystyrene (EPS), Rock wool, PU/PIC, POLYPHEN and extruded polystyrene (XPS).
Panels can be manufactured to any transportable length.
Advantages and Disadvantages of the different core materials
It is the most economic form of insulation
The flexible core is not easily damaged
When exposed to a fire the core material starts softening from 90ฬ C and the panels lose their structural integrity
Rock wool Core Panel
It is fire safe
