The weatherability evaluations of architectural membranes conduct an investigation into the solar radiation effect of membrane materials by accelerated weathering test and outdoor exposure test. The period of outdoor exposure for membrane under specified load is usually 2, 5, 10 years. It is the accelerated weathering test, which expose membrane to reach accumulated irradiance energy in the adequate apparatus. This study is measurement of the breaking strength and observation of the appearance for three different membranes after outdoor exposure and accelerated weathering exposure.
