FAQ

When do you not need an energy performance certificate?
When do you need an energy performance certificate?
Why is the energy performance certificate compulsory?
What is an EPC?
Can insulated walls breathe?
Do insulated exterior walls become covered with algae?
Can houses be too airtight?
The wall of my old house is 50 cm thick, is it sufficiently insulated?
Does insulation increase the risk of fire?