Residential and office building Unterdorf, Küssnacht am Rigi (canton of Schwyz)

 

A residential and office building of the 1960ies in Küssnacht am Rigi was energetically upgraded with the AERO external thermal insulation composite system. 30 mm of the insulating material was attached with dowels that do not form thermal bridges on the wall, which consists of 300 mm thick brickwork. The u-value before the renovation was about 1.1 W/(m²·K) and decreased due to the measure to 0.4 W/(m²·K). The renovation was implemented under the guidelines of the protection of local architectural heritage.