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Performance metrics & physics

Glass Tinting Coefficient

Glass tinting coefficient is a legacy industry term, similar to shading coefficient, that compares the heat-transmission of a glazing assembly to a 3 mm clear glass reference.

Glass tinting coefficient and shading coefficient are essentially equivalent terms used in different markets and eras. Both express performance relative to plain clear glass.

Modern automotive and architectural film spec sheets have largely moved to SHGC and total solar energy rejection as the primary metrics. Glass tinting coefficient still appears occasionally on older datasheets.

For technical comparison, convert any quoted coefficient to SHGC or total solar energy rejection if you can, since those are the metrics most widely used today.