How does SOLARBORD reflect the heat if it faces down?
The aluminum that is laminated to SOLARBORD reflects radiant energy very efficiently and it does not radiate heat very well. The fact that the foil faces the attic creates the air space required for a radiant thermal shield to function. Because it is installed in this manner, SOLARBORD will emit (transfer) only about 3%* of the radiant energy to the cooler air space below it, this 97%* of the radiant energy that ordinarily is transmitted to your attic interior is blocked. An additional benefit of facing the foil down is the fact that it does not gather dust which can limit the effectiveness of a radiant thermal shield.
