In some instances, it is possible to source glazing data from manufacturers for your project. If Solar Gain Factors are not included with this information then you can calculate them using the method below.
The equations below refer to windows with and without internal shading. Each window construction - whether with or without internal shading - will have its own independent shading coefficient data.
It is important to note that each window construction - with or without internal shading - will have its own independent shading coefficient data
Solar Gain Factors for glazing with no internal shading
Solar Gain Factors for glazing with internal shading
Further information can be found on this page on Pilkington's website.