Radiant barriers and insulation are both designed to regulate the temperature of your home, and neither is significantly better than the other. For best results, ABS Insulating advises that you use one in conjunction with the other. Insulation serves to slow down outside temperatures from getting into your home, while a radiant barrier reflects heat away. Radiant barriers force outside heat to retreat from your home, while insulation adds a second layer of protection. When used together, radiant barriers and traditional insulation make for a very energy-efficient home.