Reflective insulation is a type of insulation that helps reduce heat transfer by reflecting radiant energy. It typically consists of a layer of reflective material, such as aluminum foil, which is placed facing an air space. This design minimizes heat gain in warm climates and heat loss in cooler conditions, making buildings more energy-efficient. This insulation is commonly used in attics, walls, and roofs, especially in areas with extreme temperatures. By reflecting heat away from living spaces, reflective insulation can contribute to lower energy bills and improved comfort. It is often combined with other insulation types for enhanced performance.