Three Light In Solar Energy ||
Total Solar Energy
|Light Wave Lengths
|Ultraviolet Light= 5%
|Visible Light= 45%
Invisible light rays normally not damaging to inorganic materials such as deck coatings, but is damaging to organic materials such as human skin.
Very destructive to deck coatings. The greater percentage of reflectivity the less degradation and heat build up. It is in this wave length (400-700 nanometers) where polymers in a deck coating are subject to degradation.
This light is not damaging to the polymers in a deck coating but can be absorbed and turn into heat. For conductive heat flow this is the most important light wave (700-2400 nanometers).
There are ASTM Tests that will measure the percentage of reflectivity off of a deck coating at a given dry mil thickness after being exposed for a given period of time to Solar Energy.
ASTM D1729 and ASTM E97
These tests measure the Visible Light reflectance of a coating (400-700 nanometers).
GALACTI-KOTE® FIBERED ELASTOMERIC COATING is one of the brightest pure white coatings available on the market today. As a result of space age technology in developing ceramic components, GALACTI-KOTE® has a reflectance greater than 86%.