Light weight polystyrene sheets are used as suitable acoustic materials and waterproofing sheets. Sheets of PS can be easily cut, trimmed and formed to suit as per desired design for a number of applications. In construction arena, sheets of polystyrene are required to make walls and ceilings acoustically insulated. Moreover, these sheets are ideal to make walls thermally insulated. Polystyrene sheets also have wide applications in furniture making field. Low maintenance PS sheets possess flame retardant quality. These are, therefore, ideal raw materials for applications where exposure to fire is a common occurrence. Colorful appearance, high temperature proof design and cost effectiveness are the key aspects of the sheets of polystyrene.