Doors are necessary for access and often for ventilation and illumination too. However, if they are in poor condition (or just very old) they can contribute to more than 40% of a building's air-leak-related energy losses.
Doors are necessary for access and often for ventilation and illumination too. However, if they are in poor condition (or just very old) they can contribute to more than 40% of a building's air-leak-related energy losses.
