Energy has become expensive - that's why energy saving is an important topic today. Even in private households, we can do a lot to ultimately save money. Being economical with water and electricity has become a matter of course, but there are still many areas in the home where we can take action. The authors demonstrate step by step how to insulate pipes, ensure that roller shutter boxes no longer let in cold air, and insulate facades, basement ceilings, as well as roofs and attics.