This is how modern roofing stackups work. They have a radiant heat barrier (layer) usually made from a thin foil shield attached to the roofing plywood. The onl

This is how modern roofing stackups work. They have a radiant heat barrier (layer) usually made from a thin foil shield attached to the roofing plywood. The only catch is you need a vented barrier below the foil to remove the heat. This is usually in the form of battons that are vented out to a ridge vent. For this fabric to work, the third layer is acting like a thermal insulator - making sure the silver layer does not transfer the heat to your body.