Ventilated facade systems classification. Influence of ”Thermal bridges” on their heat-resistant characteristics
There are currently a large number of ventilated facade system (VFS) designs for thermal insulation of exterior walls. At the same time structures are greatly varied by the way of interlayer ventilation, type of insulation protection from the filtration air flow, thermal protection level with the equal thickness of heat insulation material, etc.
In this article the VFS thermal insulation structures were analyzed. The main problems of designing such systems are protection of thermal insulation layer from cold filtration air flow and reducing heat transfer resistance by reason of heat-conducting inclusions (e.g. metal fixings). The possible technical decisions for both questions are found.
On the basis of field and laboratory researches a classification system is proposed. External walls heat transfer resistance calculations of a real object with a vented insulation system were carried out.