And the foam, in

Despite the positive aspects of the material, you can take out the weaknesses, for example, the premises in which the ventilation system poorly works can contribute to the accumulation of moisture between the wall and the foam. And the foam, in turn, has a very low vapor permeability and therefore the walls turn out to be breathing in the house, accordingly, the climate in the room will deteriorate, and over time, a fungus or mold may appear. Thus, it is necessary to do vapor barrier from the side of the room.