I do not have access to the specific technical details of Nano Glass Stone or its outdoor durability. However, it is generally expected that Nano Glass Stone, if installed correctly and maintained properly, can last for many years on outdoor wall coverings. Factors that can affect its longevity include exposure to weather conditions, amount of foot traffic or contact, and quality of installation. It is recommended to consult with a professional installer for specific information and guidance regarding the use of Nano Glass Stone for your outdoor wall coverings.