OK -- so we know that short-wave radiation (sunlight, etc.) reflects differenty on given surfaces than does long-wave (warm body radiation). This is the whole point of things like low-E windows. So, does a foil/bubble material inhibit long-wave radiation as much as it does short-wave? I imagine that the foil is for short, the bubbles for long, but do we really know the performance differential?
I ask because I'll soon be moving my Airstream home to Central Colorado, where we have approximately zero cooling degree-days and an incalculable number of heating degree-days. Radiant gain from ol' Sol, even in August, would be quite welcome, while preventing body heat from escaping is crucial to survival when it's 40-70 below.
It's not the heat, it's the stupidity.