Now that the Energy Certificate for Buildings has been introduced throughout the European Union, we can expect to see a sharp rise in the number of building renovations. This volume is a practical guide with concrete recommendations for realizing energy-related renovation measures - it accompanies the planner from design to execution. All energy-related issues are treated according to their goals. Large-scale detail drawings document constructive solutions for removing structural weaknesses. An overview of installation engineering measures helps to evaluate possibilities, costs, and economic viability. The book uses realized projects to demonstrate that sustainable improvements cannot be achieved by energy-specific measures alone - it is also important to consider the building as a whole. All of the examples are documented with a state analysis as well as a depiction and assessment of the measures taken.