The façade concept
In this multi-layer façade system, the load-bearing exterior wall is given a facing shell as weather protection. The façade panels are attached to a substructure that is anchored to the façade structure. The space between the wind foil/insulation and the façade structure or cladding ensures that rear ventilation is guaranteed (chimney effect).
The load-bearing wall
The substructure transfers the dead loads of the outer cladding, and the acting wind loads to the room-enclosing outer wall, which ensures that the indoor climate is maintained inside the building. This ensures continuous insulation.
The insulating material
Suitable insulation materials for a ventilated curtain façade are, for example, primarily boards made of mineral wool (rock wool/glass wool), which comply with the fire protection regulations as well as the desired energy requirements.
It usually consists of a two-part construction that is fixed to the outer wall of the building. As a rule, metal substructures are used to compensate for structural tolerances. This basic construction is aligned plumb and true to line and serves as a fastening level for the installation of various façade cladding materials.
The cladding can consist of different materials: HPL, aluminium composite, basalt, ceramic, metal, etc. It is kept at a distance from the solid exterior wall by the substructure and should be of high quality, i.e. weatherproof, durable, non-fading, UV and frost as well as heat resistant and have a high fire protection quality.
By separating the load bearing and room-enclosing function from the weather protection and the thermal insulation with an intermediate ventilation zone, a highly effective construction is created that can be used for all building heights and uses, depending on the material.
Stable room temperature
In the summer months, mineral insulation, in addition to rear ventilation, protects the interior from heat radiation, while in winter the insulation provides the greatest possible heat storage for the building structure. The temperature balance between indoors and outdoors takes place in the wall.
The exchange of air between the substructure and the load-bearing wall, caused by wind and the thermal buoyancy of heated air, causes the moisture in the ventilation space caused by water vapour diffusion or driving rain to be removed.