When building a home it's always important that you take into consideration how the heat is going to move through the house. When discussing heat the word radiant comes up as a way of describing how heat moves. Say that you have a cup of hot coffee. The heat will radiant into the cup, then from the cup to your table, as well as radiating the heat from the coffee and up into the air until the heat has been pulled out from the source. That's where the idea of a radiant barrier comes into play for ensuring that your heating bills stay as low as possible during the colder months.
