Overview

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. 

Method

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.

Key

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

Notes

• This information was obtained courtesy of Pilkington Glass Limited
• It is the responsibility of the user to ensure their use is appropriate for any particular application and that such application complies with the relevant local and national legislation, standards, codes of practice or other requirements.
• Bentley Systems Ltd disclaims any and all liability whatsoever arising from any error or omissions from this publication and for all consequences relying on it.

Further information can be found on this page on Pilkington's website.