However, for ventilated facades that support combustion, and for wooden details of the structure it is better to use cotton wool, which does not burn, not polystyrene. Now polystyrene is made with special impregnation with antipyren, which stops the spread of fire. Being under a layer of plaster, polystyrene is not able to ignite, say, from excessive heat on the street - this is only one of the myths about the material.
