How does reflective insulation work?
Hopefully you’ve been reading about this throughout the website, but we’re happy to tell you again: Reflective insulation and radiant barrier are designed to block RADIANT heat. Radiant heat travels through space from a warm surface to a cooler surface. It can be heat from the sun, an electric heater, or even holding your hand above a warm stovetop. Reflective insulation will block up to 97% of radiant heat, while regular bulk insulation (fiberglass, foam, etc.) will only block 10 – 20% of it. This is extremely important to remember because up to 90% of all summer heat gain and up to 75% of all winter heat loss is radiant heat.
