Reflectix 48 in. W X 125 ft. L X 0.006 in. Reflective Radiant Barrier Foil Insulation Roll 500 sq ftThe Reflectix radiant barrier is an excellent upgrade for making a residential structure more energy efficient. The product is primarily installed in attic systems to reduce the transfer of radiant energy through the roof (resulting in lower attic temperatures) to the attic floor. Lower attic temperatures mean less AC usage to keep your house cool, which translates to lower utility bills. The radiant barrier product is available through various do it