Polystyrene (PS) is a polymer made from the monomer styrene, a liquid hydrocarbon that is commercially manufactured from petroleum.
Description
Specification
Expanded polystyrene (EPS) •The most versatile of the three rigid insulation options. ... Extruded polystyrene (XPS) •Easily recognized by its blue, green, or pink color. ... Polyisocyanurate (Polyiso, ISO) •Most often used in roofing applications.