Performance Values: Glass Coating, Tints and Frits

Building with glass, aluminum, and ideas.

TECHNICAL BINDER: Guide to Glazing, Finish Options and Performance

Performance Values: Glass Coating, Tints and Frits

The following terms are used in performance value charts below:

Visible Light Transmittance:

The percentage of visible light that is transmitted through the glass. Interior daylight levels will be determined by this value. The higher the percentage, the more daylight is transmitted.
Solar Transmittance: The percentage of ultraviolet, visible and near infrared energy that is transmitted through the glass.

Visible Light Reflectance:

The percentage of light that is reflected from the glass surface.
Solar Reflectance: The percentage of solar energy that is reflected from the glass surface.

ASHRAE U-Value:

The amount of heat gain or loss through glass due to the difference between indoor and outdoor temperatures (based upon ASHRAE standard winter nighttime and summer daytime conditions). The colder the climate, and the more expensive the heating fuel, the more important it is to utilize a low U-value glass.

Shading Coefficient:

The ratio of solar heat gain through a specific type of glass product to the solar heat gain of a 1/8" (3mm) clear glass. The lower the shading coefficient number, the better the performance of the glass. This is particularly important in warmer climates.

Relative Heat Gain:

The amount of heat gain relative to the effects of the solar heat gain (shading coefficient) and conductive heat gain (U-Value) of the glass. The lower the relative heat gain value, the more efficient the glass is in restricting heat gain.

A Guide to Glazing, Finish Options and Performance

Glass Performance Values

Product	Transmittance		Reflectance			ASHRAE U-Value		Shading Coefficient	Solar Heat Gain Coefficient	Relative Heat Gain
	Visible	Solar	Vis-In	Vis-out	Solar	Summer	Winter
Clear Insulated Laminated with high-performance low-e coating	69%	32%	12%	12%	28%	0.29	0.29	0.44	0.37	92.06
Clear Insulated Laminated w/ Pyrolytic Low-e	69%	46%	15%	18%	13%	0.38	0.34	0.76	0.65	158
Clear Insulated Laminated	77%	53%	14%	14%	11%	0.56	0.47	0.78	0.67	163
Clear Laminated	87%	68%	7%	7%	6%	1.00	0.98	0.86	0.74	187

Tint Performance Values

Clear	Transmittance		Reflectance			ASHRAE U-Value		Shading Coefficient	Solar Heat Gain Coefficient	Relative Heat Gain
	Visible	Solar	Vis-In	Vis-out	Solar	Summer	Winter
Clear Insulated Laminated with high-performance low-e coating	69%	32%	12%	12%	28%	0.29	0.29	0.44	0.37	92.06
Clear Insulated Laminated w/ Pyrolytic Low-e	69%	46%	15%	18%	13%	0.38	0.34	0.76	0.65	158
Clear Insulated Laminated	77%	53%	14%	14%	11%	0.56	0.47	0.78	0.67	163
Clear Laminated	87%	68%	7%	7%	6%	1.00	0.98	0.86	0.74	187

Green Tint	Transmittance		Reflectance			ASHRAE U-Value		Shading Coefficient	Solar Heat Gain Coefficient	Relative Heat Gain
	Visible	Solar	Vis-In	Vis-out	Solar	Summer	Winter
Tinted Insulated Laminated with high-performance low-e coating	60%	24%	11%	10%	8%	0.29	0.30	0.41	0.36	86.06
Tinted Insulated Laminated w/ Energy AdvantageTM	60%	28%	14%	14%	7%	0.39	0.34	0.50	0.43	105
Tinted Insulated Laminated	67%	32%	12%	11%	7%	0.57	0.47	0.53	0.46	114
Tinted Laminated	73%	38%	7%	7%	5%	1.04	1.04	0.64	0.55	143

Gray Tint	Transmittance		Reflectance			ASHRAE U-Value		Shading Coefficient	Solar Heat Gain Coefficient	Relative Heat Gain
	Visible	Solar	Vis-In	Vis-out	Solar	Summer	Winter
Tinted Insulated Laminated with high-performance low-e coating	35%	17%	7%	6%	7%	0.29	0.31	0.32	0.28	68.06
Tinted Insulated Laminated w/ Energy AdvantageTM	34%	25%	13%	8%	7%	0.39	0.34	0.46	0.40	98
Tinted Insulated Laminated	39%	29%	11%	7%	6%	0.57	0.47	0.50	0.43	107
Tinted Laminated	44%	40%	5%	5%	5%	1.03	1.02	0.63	0.54	141

Blue-Green Tint	Transmittance		Reflectance			ASHRAE U-Value		Shading Coefficient	Solar Heat Gain Coefficient	Relative Heat Gain
	Visible	Solar	Vis-In	Vis-out	Solar	Summer	Winter
Tinted Insulated Laminated with high-performance low-e coating	52%	20%	9%	7%	9%	0.31	0.29	0.35	0.3	92
Tinted Insulated Laminated w/ Energy AdvantageTM	58%	29%	14%	14%	8%	0.39	0.34	0.52	0.45	110
Tinted Insulated Laminated	66%	33%	13%	11%	7%	0.56	0.47	0.55	0.47	118
Tinted Laminated	73%	43%	6%	6%	5%	1.03	1.02	0.66	0.57	146

Bronze Tint	Transmittance		Reflectance			ASHRAE U-Value		Shading Coefficient	Solar Heat Gain Coefficient	Relative Heat Gain
	Visible	Solar	Vis-In	Vis-out	Solar	Summer	Winter
Tinted Insulated Laminated with high-performance low-e coating	41%	20%	8%	8%	8%	0.29	0.30	0.36	0.31	76.06
Tinted Insulated Laminated w/ Energy AdvantageTM	42%	30%	13%	9%	8%	0.39	0.34	0.53	0.46	112
Tinted Insulated Laminated	48%	34%	11%	8%	7%	0.56	0.47	0.56	0.48	120
Tinted Laminated	52%	42%	6%	6%	5%	1.03	1.02	0.65	0.56	144

Ceramic Frit Performance Values

1/8 in. Dots	Transmittance		Reflectance			ASHRAE U-Value		Shading Coefficient	Solar Heat Gain Coefficient	Relative Heat Gain
	Visible	Solar	Vis-In	Vis-out	Solar	Summer	Winter
Clear Insulated Laminated w/ PPG Solarban 60TM	47%	17%	19%	22%	29%	0.30	0.29	0.37	0.32	79
Clear Insulated Laminated w/ Energy AdvantageTM	50%	34%	26%	23%	17%	0.38	0.34	0.57	0.49	120
Clear Insulated Laminated	56%	38%	27%	21%	16%	0.56	0.47	0.59	0.51	127
Clear Laminated	60%	44%	20%	25%	15%	1.01	1.02	0.63	0.55	141

1/8 in. Holes	Transmittance		Reflectance			ASHRAE U-Value		Shading Coefficient	Solar Heat Gain Coefficient	Relative Heat Gain
	Visible	Solar	Vis-In	Vis-out	Solar	Summer	Winter
Clear Insulated Laminated w/ PPG Solarban 60TM	36%	13%	23%	27%	30%	0.30	0.29	0.35	0.30	75
Clear Insulated Laminated w/ Energy AdvantageTM	39%	26%	32%	27%	20%	0.38	0.34	0.46	0.40	97
Clear Insulated Laminated	44%	29%	35%	26%	19%	0.56	0.47	0.48	0.42	104
Clear Laminated	46%	34%	25%	33%	19%	1.02	1.02	0.54	0.46	122

1/8 in. Lines	Transmittance		Reflectance			ASHRAE U-Value		Shading Coefficient	Solar Heat Gain Coefficient	Relative Heat Gain
	Visible	Solar	Vis-In	Vis-out	Solar	Summer	Winter
Clear Insulated Laminated w/ PPG Solarban 60TM	42%	15%	22%	24%	28%	0.30	0.29	0.38	0.33	75
Clear Insulated Laminated w/ Energy AdvantageTM	45%	29%	29%	26%	18%	0.39	0.34	0.51	0.44	108
Clear Insulated Laminated	50%	34%	31%	24%	18%	0.56	0.47	0.53	0.46	115
Clear Laminated	53%	39%	21%	29%	11%	1.03	1.02	0.60	0.52	135

Do you have a question about performance values for glass coating, tints and frits? Please contact us or call us at 800-345-7899 to talk to an expert.

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