Radiant barrier foil insulation is unlike mass insulation that merely slows down or resists heat transfer. A radiant barrier BLOCKS
radiant heat. Heat always moves to colder areas by natural law - the
problem is how to keep the heat in the winter and how to keep it out in
the summer. There are three ways in which heat moves from warm spaces
to cold spaces: CONDUCTION is the direct heat flow through a solid object such as a wall or a ceiling. CONVECTION is heat movement through air, occurring when air is warmed. The warm expands, becoming less dense and rising. RADIATION
is the movement of heat rays across air spaces from one warm object to a
cooler object. The heat we feel from a wood stove or a quartz space
heater is radiant heat. ALL OBJECTS AND BODIES GIVE OFF RADIANT HEAT.
When Installing Foil Radiant Barrier to your attic your attic you will be stopping 97% of the radiant heat trying to penetrate your attic decking. Here in Texas that means reducing a 160+ degree attic to a 120- degree attic over night! leaving your insulation blanket a much lower heat load to handle before it moves into your house. Over all resulting in a much more comfortable home with lower utilities to deal with.