Glass Glossary

Ultraviolet Light (UV)


Last Updated: November 23, 2023

Ultraviolet (UV) light is a form of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays. It falls within the wavelength range of approximately 100 to 400 nanometers (nm).

UV light is divided into three subcategories: UVA (315-400 nm), UVB (280-315 nm), and UVC (100-280 nm). The sun emits significant amounts of UVA and UVB, which can cause fading of interior materials and furnishings, especially within the 300-380 nm range of the solar spectrum.

Figure: Ultraviolet Light (UV)

UV light can have detrimental effects on the colors and integrity of interior materials and furnishings, leading to premature fading, discoloration, and loss of value. It is a major factor in the fading of fabrics, artwork, carpets, and other interior items.

Figure: 

Cardinal’s Fade-Reducing Solutions:

LoĒ™ Glass: Cardinal Glass Industries offers a range of high-performance low-emissivity (low-E) coatings, including LoĒ² and LoĒ³, that help reduce the transmission of UV light into interiors. These coatings are designed to selectively filter out the sun’s harmful rays, including UV light, while allowing visible light to pass through. As a result, Cardinal’s LoĒ products significantly reduce the risk of fading and extend the life of interior furnishings.

Laminated Glass Products: Cardinal also offers laminated glass products, which consist of two or more panes of glass bonded together with an interlayer. The interlayer acts as a barrier, blocking up to 99% of UV light transmission and reducing the risk of fading. Laminated glass provides excellent protection against fading, as well as added benefits such as safety, security, and noise reduction.

UV light is a key contributor to interior fading, but with Cardinal’s LoĒ and laminated glass products, homeowners and businesses can significantly reduce the risk of fading and protect the value and appearance of their interior materials and furnishings.

Glass UV Fading Protection Comparison

Glass SHGC UV-Trans ISO-CIE
Clear/Clear
0.78
58%
83%
Clear/LoĒ-i89
0.75
<1%
81%
Clear/LoĒ-Di89
0.79
29%
80%
Lami/LoĒ-180
0.64
<1%
73%
LoĒ²-272/Clear
0.41
16%
71%
Clear/Clear
0.41
<1%
83%
Clear/LoĒ-i89
0.27
5%
81%
Clear/LoĒ-Di89
0.22
<1%
80%
Clear/LoĒ-180
0.18
2%
73%
LoĒ-272/Clear
0.18
<1%
71%

Figure: Glass UV Fading Protection Comparison