Looking to cut your heating bills?

When choosing insulating glass, it is a good to consider the orientation of the building against the cardinal points. An experienced designer or architect takes the orientation of the house into account from the start. The position of the house partly determines the size of the glazing. Based on the movement of the sun in the sky and the fact that winter solar gains are good because they decrease the need for heating and in summer the solar gains are uncalled for because they can cause overheating of the rooms, thus causing discomfort and, in the case of air conditioning, higher energy consumption for cooling, it is clear that it the glazing should be designed according to the orientation of the facade, because the performance parameters depend on cardinal directions. Suitable glass selection thus dictates the performance of the glazing.

Which glass to choose based on the cardinal points of the house?

North facade

North-facing windows receive less direct sunlight, which means that good thermal insulation is key to minimise heat loss. For this side choose glass with a high thermal insulation value (U-value).

Look for Thermobel TG glazing in the AGC product range.

South facade

The south side receives less sunlight during summer days because the sun is high and a roof with a larger overhang, for example, provides protection against overheating. On the other hand, in winter when the sun is low and its rays fall on the glass directly, here is the highest potential of solar gains. To use the free solar energy, choose glass with a high solar factor (SF) value for this side. However, such windows require suitable natural shading or additional external shading such as blinds or shutters. 

Look for Thermobel TG Passiv glazing in the AGC product range.

East and west facade

East and west facade: Windows on the east and west sides are exposed to direct sunlight in the morning or afternoon. For these facadess, use glass that combines good thermal insulation with sunlight protection to prevent the interior from overheating during the warmer parts of the day. Always choose glass with a low solar factor (SF).

Look for Thermobel TG SolarControl glazing in the AGC product range.

If you choose your insulating glass properly according to the facade orientation to the cardinal points, it can significantly help improve energy efficiency of the house and thus increase the comfort of living.