Shading coefficient

Shading coefficient, is a value that determines one type of thermal performance of a glass unit (panel or window) in a building.

Essentially, it is the ratio of solar gain (due to direct sunlight) passing through a glass unit to the solar energy which passes through 3mm Clear Float Glass. It is referred to as an indicator to how the glass is thermally insulating (shading) the interior when there is direct sunlight on the panel or window.