Glass reinforced plastic (polyster) is also known as GRP or sometimes fibre reinforced plastic (FRP).It is a composite cover of glass fibres in a unsaturated synthetic resins.It is a highly flexible material used in buildings for exterior panels and also as fully structural load-bearing elements. It can be used to make roofing infill panels, drainage components, interior and exterior decorative features. It can be made semi-transparent or opaque and can be used for door and window frames. It is also used for waterproof sheet and as form work for specific structures.