Austin house had insulation in the rafters
We live in Dallas, and the summers are hot. When the temperature is 102 outside, the attic is above 116 degrees. We want to put in a radiant barrier. Why did the Austin house have insulation in the rafters, did it have a radiant barrier between the insulation and roof? Regarding radiant barrier's a friend told me that I could not spray it in the the summer because it is too hot. I plan to do it at night when it is cooler. Is it true that I cannot spray it in in the summer, is there a heat maximum to consider? How much better is the aluminum foil radiant barrier? These questions all pertain to a house that is already built.