Heat barriers are essential elements that help protect spaces from high temperatures and prevent the unwanted transmission of heat. In addition to the conventional materials such as fiberglass and rock wool, alternative materials such as aerogel and ceramic fibers are gaining popularity as heat barriers. Another term used for heat barriers is thermal insulation, which includes materials such as foam, cellulose fibers, and radiant barriers. The idea behind using heat barriers is to keep the inner space cooler or hotter than its surroundings, improving energy efficiency and reducing costs. The widespread use of heat barriers has improved the safety and comfort of various industries such as automotive, construction and aerospace.