Protection that Shines Through
Laminated glass made with Saflex® interlayer absorbs solar radiation. As with monolithic heat-absorbing glass, if design conditions such as high solar radiation intensity or absorption increases thermal stress, heat strengthening the glass plies is a desirable option. Laminated heat-strengthened glass is ideal for spandrel and other applications where the fallout of glass after breakage is a safety and security concern.
Solar and thermal energy controls must be carefully considered when designing and specifying a glazing system. This is because the amount of energy transferred through glazing impacts the costs of heating, cooling and lighting a building. That's where Saflex interlayer can help.
Saflex interlayer in combination with appropriate glass types, can effectively manage heat build-up, as well as help reduce fading and damage from ultraviolet (UV) radiation. Much like sun block, Saflex interlayer screens out and virtually eliminates most harmful and damaging UV rays. In fact, Saflex interlayer filters out almost 99% of these rays which is the equivalent of Sun Protection Factor (SPF) of 50+. Unchecked these rays can cause health concerns and cause fade damage to interior furnishings, fabrics, drapes, wall coverings, photographs and artwork.
Download the Heat and Light Control Characteristics of Saflex® .
Designing for Ultraviolet Protection
Many people don't know that the type of glazing used in window openings directly affects the amount of natural daylight, heat transfer, glare, fading of materials and the overall comfort of the building's occupants.
Reducing Fading and Damage from Ultraviolet Rays with Laminated Glass
Saflex® interlayer can be laminated between nearly any standard or solar management glass to provide a wide range of appearance and performance benefits.
Laminated glass made with Saflex interlayer is virtually impervious to ultraviolet radiation. The ultraviolet radiation wavelengths range from 280-380 nanometers (nm). At a nominal 0.76 mm thick (0.030 inch), Saflex interlayer is formulated to selectively filter greater than 99% of the UV radiation up to 380 nm, transmitting less than 1% of the harmful UV radiation. An equivalent thickness of monolithic clear glass transmits 62% of the ultraviolet radiation.
Controlling Visible Light Radiation
Laminated glazing made with Saflex and Vanceva® interlayer effectively controls Visible Light Transmittance to reduce the damage caused to interior furnishings. Transmitted visible light can be scattered or transmitted straight through glazing. When light is scattered through a glazing, it is referred to as translucent. If most of the light is transmitted through the glazing, it is referred to as transparent. If no visible light (0%Tv) is transmitted through a glazing it is considered opaque. Saflex and Vanceva interlayer can be specified in different thicknesses and colors to effectively manage the amount of visible light desired within a building without sacrificing aesthetics.
Reducing Thermal Stress
In laminated glass, the interlayer and glass both absorb solar radiation. Factors that accentuate a hot center/cold edge condition will tend to increase thermal stress. Excessive edge cover, installation procedures, internal and external shading and backup materials (e.g., spandrel) can also contribute to thermal stress. Good design and installation practices must be followed to reduce the risk of glass breakage from thermal stress.
For more information on Saflex or Vanceva interlayer, contact us.
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