In both new and existing buildings, insulation is very important to save energy and minimize heat loss. But simply installing air vents in windows isn't enough to achieve a healthy indoor environment. Better insulation also means considering ventilation!
If you don't ventilate your home, you create a poor climate, a breeding ground for bacteria and fungi. This can cause health problems such as:
-> Breathing difficulty | Cough | Fatigue | Dehydration | Headache