Deep renovation according to European Commission refers to those buildings renovations that reach more than 60% reduction of primary energy consumption.
Here you can find General information on Buildings Deep Renovation, structured as follow:
Building Energy Efficiency General Info at EU and national level.
Principles : information on principles of the building renovation components (building envelope, heating systems, DHW systems, cooling systems, ventilation systems, Renewable energies, Ligting)
Recommendations, to improve the buildings towards deep renovation with the objective to reach the national requirements of NZEB, indicative efficiency parameters, and costs of renovation actions.
Specific tools and calculators which outline the costs of renovation, potential energy savings and other benefits due to renovation