Außenwanddämmungen

Außenwanddämmungen, also known as external wall insulation, are systems applied to the exterior surfaces of buildings to reduce heat loss. This is a crucial component in improving a building's energy efficiency and thermal comfort. The primary purpose of an Außenwanddämmung is to create a continuous thermal barrier around the building envelope, preventing heat from escaping in winter and entering in summer. This leads to lower heating and cooling costs and a more stable indoor temperature.

There are several types of Außenwanddämmungen. One common method is the External Thermal Insulation Composite System (ETICS), often referred to as WDVS (Wärmedämmverbundsystem) in German-speaking countries. ETICS involves applying insulating boards, usually made of polystyrene or mineral wool, to the exterior wall, followed by a reinforced base coat and a final decorative render. Another approach is the ventilated facade, where an insulation layer is placed behind an outer cladding material, with an air gap in between. This air gap allows moisture to escape and contributes to the thermal performance.

The materials used for insulation vary widely, including mineral wool, expanded polystyrene (EPS), extruded polystyrene (XPS), and polyurethane foam. The choice of material depends on factors such as the building's construction, environmental considerations, and budget. Proper installation is critical to the effectiveness and longevity of any Außenwanddämmung. Air leaks and thermal bridges must be avoided to maximize the benefits. By reducing the need for artificial heating and cooling, Außenwanddämmungen play a significant role in reducing a building's carbon footprint and contributing to sustainability. They also help to protect the underlying structure from temperature fluctuations and moisture damage.