How can rFOIL™ insulate if it’s so thin?
It’s a common misconception that insulation must be thick to perform. This is because R-Values are closely related to a product’s thickness. For two similar products with different thicknesses, the thinner of the two will always have a lower R-Value than the other. It is also a common mistake to only consider a material’s R-Value when choosing insulation. It’s highly possible for a thinner reflective material to provide better thermal performance than a thicker non-reflective product, even though the thicker product will have a higher R-Value. Except for gold and silver, pure aluminum is the most reflective material on earth. The thin aluminum layer reflects radiant heat energy, and this ability is unrelated to the product’s overall thickness.
