Adding double-faced foil radiant heat barrier material to your attic will bounce heat back to where you want it to be. Radiant barriers block the heat from coming in during the summer and bounce it back indoors when it tries to escape in the winter.
Radiant barriers are materials that block and reflect radiant heat. Generally, they are made using aluminum foil. They block 95-97% of radiant heat. Radiant barriers work two ways. They reflect heat radiation away from the structure that they are protecting. They also limit the amount of heat energy that they emit on their cooler side.
In the summer, heat is reflected away from the interior of the home. This reduces the heat load that air conditioning equipment must remove to keep the living areas comfortable. This saves on the electric bill.
In the winter, the radiant barrier stops heat from escaping by bouncing it back toward the living areas of the house. This reduces the amount of energy need to replace heat that does escape to the cold outdoors. Less energy is need for heat and the furnace fan will run less.
The insulation and the radiant barriers work together. The insulation slows conductive heat transfer and the radiant barrier sends radiant heat back to where it belongs. It is a money saving one two punch for the homeowner.
Here are two sources to order Radiant Barrier materials for your home.
http://www.energyefficientsolutions.com/ - Your online source for Radiant Barrier