Polystyrene is a thermoplastic made from styrene, a hydrocarbon manufactured from petroleum. It remains solid at room temperature. In its pure form it is an inflexible hard plastic, commonly seen in items such as plastic cutlery. However, there is another form – expanded polystyrene – which is created by blowing a gas such as carbon dioxide into polystyrene. This expands it into a kind of foam, known by the brand name Styrofoam. Its low thermal conductivity makes it ideal for construction applications, where it is used as insulation. **** Polystyrene optional
The benifits. Polystyrene acts as an excellent insulator. Polystyrene is a good choice for energy efficiency .The material is moisture resistant, so it’s unlikely that any water or water vapour will penetrate it. Using polystyrene will keep moisture out and heat in. Using polystyrene as insulation is also extremely cost effective.