Answer: the thickest materials are the best insulators.
The thermal resistance of an insulator depends on its thickness and its composition. The choice of a thermal insulator is also guided by its ease of break, its use and its composition. The ecological and health aspect is an important factor to take into account. Insulators have an ecological vocation, they indeed make it possible to reduce the energy consumption of a house, it is therefore important to choose insulators which respect health and environmental standards contributing to sustainable development. The top 10 of the best thermal insulators: - Polyurethane, - Extruded polystyrene, - Sheep wool, - Flax, - Cork, - Expanded polystyrene, - Hemp roll, - Cellulose, - Wool wood, - Glass wool or rock wool.