FRP roof sheet :fiberglass reinforced polyester,bright and clean appearance, light transmittance,anti-ageing Unit Weight:1800g/ M2 2400g/, M2 3050g/ M2 Nominal Thickness:1.2mm 1.5mm 2.0mm Heat Resismittance Limit: -60°C 120°C Light Transmittance:80%(transparent)72%(lignt blue) Anti-ultraviolet Rate:99.9% Thermal Expansion Coefficient:2.6*10-5cm/cm/°C Warranty:20 years