The curtain wall performance test is mainly carried out to prevent any problems that may occur after the installation by checking whether there is a problem beforehand in the construction of the outer wall of the middle and large type construction. Since it is tested under harsh environmental conditions by applying domestic and foreign standards, many problems are found, and the biggest purpose is to improve the problems of design and construction through testing and to install better quality window products. In this study, the structural sealant products distributed in Korea were exposed to the outdoor exposure zone of the Seosan outdoor exposure test site, and compared with the curtain wall performance test of the product and the degradation of the product after 12 months outdoor exposure. In the future, it will be possible to apply the performance evaluation to the product comparison evaluation after exposing for more than 2 years.