"Wouldn't you need some sort of "heat shield" offset from the outer walls for your approach to work at night, if at all? " It sounds like this paint is a "heat

"Wouldn't you need some sort of "heat shield" offset from the outer walls for your approach to work at night, if at all? " It sounds like this paint is a "heat shield" that modifies the rate of thermal transfer. Shouldn't that mechanism improve the performance of the existing substructure and insulation?