Research shows that in new buildings (low energy buildings) the materials are responsible for almost as much greenhouse gas as the use phase. Life Cycle Assessment (LCA) is a tool that allows the environmental impact of a building to be mapped over its entire life cycle. It not only considers the impact on climate change, but a whole range of environmental indicators are taken into account, such as particulate matter formation, resource depletion, biodiversity loss and toxicity, among others.
Energy efficient renovation requires a well thought-out approach to the entire building envelope. As far as new buildings are concerned, houses will be built to be increasingly energy efficient in the future, partly as a result of the increasingly stringent EPB regulations. For the existing housing stock, however, there is still a lot of work to be done!