i was listening to a home improvement talk show recently and the narrator kept recommending a 'radiant barrier' in the attic. since i didn't get to listen to the complete show, i was never quite sure what was meant by a 'radiant barrier'.
i did hear enough to determine that one side has foil, which must face downward.
is a 'radiant barrier' just a piece of foam insulation with foil on one side?? or, is it something special that you must purchase?
what is meant by 'radiant barrier'??
i also believe that i heard him say that 'radiant barriers' were really not effective in cold weather; mostly effective in hot weather.