Charlie:
Frank in Alvin is thinking about having radiant barrier installed. He was thinking about having insulation blown in too, but if radiant barrier’s installed, do I still need insulation?
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Tom:
Yes. Convection, conduction, radiation. Three ways heat transfers. Conduction, you need your insulation. Hot touching cold, you want something to separate it. Convection, you ventilate your attic, let the hot air rise out, and it takes the moisture with it, and of course radiation. The radiant barrier stops that. If you hit all three, just like a good war plan, you’re going to win the game.