Radiant barrier insulation is a type of insulation material specifically designed to reduce radiant heat transfer. It typically consists of a highly reflective surface, such as aluminum foil, installed in attics, walls, or roofs to reflect radiant heat away from the living space. By creating a barrier against radiant heat, radiant barrier insulation helps maintain comfortable indoor temperatures and reduce cooling costs, especially in hot climates. Unlike traditional insulation materials that primarily resist conductive heat transfer, radiant barrier insulation focuses on blocking radiant heat, making it a valuable addition to energy-efficient building designs. Radiant barrier insulation is appreciated for its lightweight nature, ease of installation, and effectiveness in enhancing thermal comfort and energy efficiency in residential, commercial, and industrial buildings.