New construction

In the EU, all newly-constructed buildings must be so-called near-zero energy buildings as of 2022. In addition, buildings are increasingly being constructed in accordance with different environmental certifications, including BREEAM and LEED, imposing even higher demands on energy efficiency. An energy-efficient building needs to be as airtight as possible and have a high degree of insulation. An airtight building consumes little energy, although this in turn requires efficient ventilation for the building to be able to breathe.