Polystyrene, particularly in its expanded form (commonly known as EPS – Expanded Polystyrene), is widely used for soundproofing applications in buildings and appliances such as refrigerators.
Its low thermal conductivity and excellent acoustic insulation properties make it a suitable material for reducing sound transmission. Additionally, EPS is lightweight, easy to install, and cost-effective, which further supports its extensive use in insulation and soundproofing.