All roofs or ceilings must be insulated in 2016!
No exceptions for old buildings: From now on, the ceilings or the top floors of all houses must be energetically up to par. At the beginning of 2016, the Federal Government took a step further in order to achieve its ambitious climate goals. Due to the increased requirements of the Energy Saving Ordinance (EnEV), the primary energy demand of the houses should be reduced by 25 percent.