Energy control
Insulating glazing: light and energy

Under current regulations, glazing with a high solar factor g and a low U_g coefficient will be preferred (RT 2005 and RT 2012 thermal regulations).

In winter, and especially in summer when the sun is shining brightly, this sometimes results in a significant rise in indoor temperature, leading to unbearable conditions.

It will therefore be necessary to choose between these g-values and U_g for each case, taking into account energy requirements, geographical location, thermal inertia of the building, comfort requirements and the intended use of the premises (homes, schools, hospitals, offices,...