Why Copper?
The four natural metals with the highest infrared reflectivity are aluminum, copper, silver, and gold. Recent technological breakthroughs at Sigma Technologies allow copper to be deposited and coated at a very reasonable price, allowing us to make a superior radiant barrier.
Reflectivity of Metals
What is Corrosion
Not all metals maintain their reflectivity. Many metals corrode in the presence of heat and moisture. When exposed to steam or liquid water, the reflectivity of aluminum can drop to 50% reflective. Copper is considered a "noble metal" and is naturally corrosion resistant.
Superior Protection
