It is precisely the roof, ignored in these issues, that is the area of ​​the house where the greatest energy loss occurs. Deficient or inadequate coverage leads to significant energy losses. This means that during the winter there will be energy leaks and in the summer the reverse process will occur, through energy/heat gains. This ends up resulting in high thermal discomforts. This problem is very common in Portuguese homes, especially older buildings. To compensate for these losses, it is common to increase energy consumption, resulting directly in the value of the energy bill (Electricity, gas, or other fuels).