Today, ventilated facades are applied worldwide because they enable architects to meet every requirement in any climate. By creating a two leaf construction for the external wall, the ventilated air space between the cladding and the construction serves to maintain a healthy indoor climate.
Ventilated Facades Help to Control Moisture - In Any Climate
No matter what climate you find yourself in, moisture is always an issue and can seriously affect the overall performance of a building. The answer is a ventilated facade which is designed to breathe. Penetration of rain is minimised and condensation water is drained out through ventilation inlets and outlets. The ventilated air space serves multiple functions. The air in the designed cavity will circulate due to air pressure differentials and thermal differentials over the height of the building. In a cold climate this causes the condensation water at the rear of the cladding to dry. In a warm climate the moving air will cool the inner layers of the construction, and thus reducing the demand for cooling energy.
Insulated and dry
Ventilated facades have a space between the cladding and the outer wall - an ideal location for insulation materials. Rain water and condensation are removed naturally by air flowing through the cavity - so that the insulation material remains in good condition and remains effective over time.
The recommended minimum depth for a continuous ventilated cavity is 20mm, however a depth of 40mm is preferable. The relationship of the ventilation openings to the length of the rainscreen cladding should be at least 50 square cm per linear metre for facade cladding heights exceeding 1 metre. For facade cladding less than 1 metre in height, the ventilation openings should be at least 20 square cm per linear metre.