External cladding with the ventilated wall system comprises several elements:
° thermal insulation on the wall exterior
° a substructure to support the cladding
° an outer face protecting the building against atmospheric agents, separated from the insulation by an air gap.
In terms of thermal protection and the mechanism of vapour diffusion, the performance of the ventilated wall system is exceptional and totally guaranteed provided that:
° the thermal resistance of the various layers of the facade increases from the inside of the building outwards
° la resistenza alla diffusione del vapore cala invece dall'interno verso l'esterno.the resistance to vapour diffusion, on the contrary, decreases from the inside outwards.