Profiles of the Schüco AWS 65 series have thermal insulation in the range of Uf = 1.9 ... 2.0 W/m²K. This is a good value for an insulated aluminium construction. The current requirement for window construction according to the applicable Austrian OIB regulations, as of 2015, states that Uw = 1.4 W/m² K for residential buildings and Uw = 1.7 W/m² K for office buildings. This is, for example, to meet the Schüco AWS 70.HI or AWS 75.SI+. (Source: OIB RL6 10/2011)