Extending the living area with the right cellar windows
Cellars used to be a place for technical building equipment and general storage purposes. It was a restricted and dark area, unsuitable for living. Cellars were seldom heated. There was no provided insulation. That is why cellar windows were always considered of secondary, minor importance.
Due to more and more stringent requirements on energy efficiency and thermal insulation stipulated in the Energy Saving Regulation a well-insulated cellar is now the standard. Cellar rooms have therefore undergone an automatic upgrade. As a result of this development, the cellar is now designed more and more as a useful area and as an extended living area. To this end, the corresponding guidelines of the Energy Saving Regulation and the eligibility for support through the KfW-Bank should be observed.